GROUNDWATER CONTAMINATION STUDY REPORT · 2019-12-16 · levels of volatile organic chemicals in the soil gas on the Chromatex property suggest that the facility is a possible source

Reference 16Valmont Industrial ParkHRS Package

FILANT NO. 2

WEST HAZILDCTON, PA.

JEXTffiNTT Off OKOUNlDWATIffiia. CONTAMINATION

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CHROMA.TBX . INC .

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January 1989

A R I D

TABLE OF CONTENTS

PAGE NO.

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . 1

SITE CHARACTERISTICS . . . . . . . . . . . . . . . . . 7

REGIONAL GEOLOGY AND HYDROGEOLOGY. . . . . . . . . . . 9

SITE GEOLOGY . . . . . . . . . . . . . . . . . . . . . 12

MONITORING WELL INSTALLATION . . . . . . . . . . . . . 18

GROUNDWATER QUALITY ANALYSIS . . . . . . . . . . . . . 23

WELL TESTINGPIEZOMETER TESTS . . . . . . . . . . . . . . . .PUMPING TEST OP HELL *10A

Test Procedure and Results . . . . . . . . . .38'Aquifer Characteristics. . . . . . . . . . . .43Effects of Punplng Test on Nearby Wells. . . .47

GROUNDWATER FLOW AND VELOCITYGROUNDWATBR FLOW DIRECTION . . . . . . . . . . . .52VELOCITY OF GROUNDWATBR FLOW . . . . . . . . . . . 59

HYDROGEOLOGY OF THE PROJECT AREAGENERAL. ...................... 63UNIT 1: Perched Zone Water Table . . . . . . . . - . 63UNIT 2: Shallow Onconfined Phreatlc Zone .... .64UNIT 3: Deep Unconflned Phreatlc Zone. . . . . . .65UNIT 4: Confining Layer. . . . . . . . . . . . . .66UNIT 5: Confined Zone. . . . . . . . . . . . . . .66HYDRAULIC RELATIONSHIPS BETWEENINDIVIDUAL UNITS . . . . . . . . . . . . . . . . .67APPLICATION OF PROJECT DATA TOCONTAMINATED RESIDENTIAL WELLS . . . . . . . . . . 68

SUMMARY AND CONCLUSIONS. . . . . . . . . . . . . . . . 70

REFERENCES . . . . . . . . . . . . . . . . . . . . . . 75

APPENDICES

FIGURES, TABLES & EXHIBITS

FIGURE 1: LOCTION MAP, CHROMATEX PLANT #2 . . . . . . 2

FIGURE 2: AREA FEATURES MAP . . . . . . . . . . . . . 8

FIGURE 3: REGIONAL GEOLOGY IN THE VICINITY OFCHROMATEX PLANT #2 . . . . . . . . . . . . . 10

FIGURE 4A: GEOLOGIC CROSS SECTION. . . . . . . . . . .13

FIGURE 4B: GEOLOGIC CROSS SECTION. . . . . . . . . . . 14

FIGURE 4C: GEOLOGIC CROSS SECTION. . . . . . . . . . .15

FIGURE 5: DRAWDOWN IN WELL #10A DURING5.7 HOUR PUMPING TEST . . . . . . . . . . . 4 O

FIGURE 6: RECOVERY IN WELL #10A AFTERCONCLUSION OF 5.7 HOUR PUMPING TEST . . .- .42

FIGURE 7: WATER LEVEL ELEVATIONS IN MONITORINGWELLS #10B, #10C AND #10D DURINGPUMPING TEST ON WELL #10A ........ .49

TABLE 1: LITHOLOGIC LOG OF MONITOR WELL #100. . . - .17

TABLE 2: MONITORING WELL CONSTRUCTION DETAILS . . . . 20

TABLE 3: CHROMATEX MONITORING WELL PURGING DATA . . .24

TABLE 4: VOLATILE ORGANIC CHEMICALS DETECTEDIN CHROMATEX MONITORING WELLS. . . . . . . . 29

TABLE 5Ai PIEZOMETER TEST RESULTS: SHALLOW WELLS . . .34

TABLE 5Br PIEZOMETER TEST RESULTS:INTERMEDIATE WELLS . . . . . . . . . . . . .35

TABLE 5C: PIEZOMETER TEST RESULTS: DEEP WELLS. . . . . 35

TABLE 6: WATER LEVELS WITH TIME IN NEARBYMONITORING WELLS DURING WELL #10APUMPING TEST . . . . . . . . . . . . . . . . 48

TABLE 7: WATER LEVEL MEASUREMENTS INCHROMATEX MONITORING WELLS . . . . . . . . .53

TABLE 8A: WATER TABLE GRADIENTS CALCULATEDUSING TRIANGULATION METHOD . . - - . „ p o.o - 57

TABLE 8B: WATER TABLE GRADIENTS OBTAINEDFROM POTENTIOMETRIC CONTOUR MAPS . . . . . . 58

TABLE 9A: CALCULATED GROUNDWATER VELOCITIES INSHALLOW PHREATIC ZONE NORTH OF DIVIDE. . . .60

TABLE 9B: CALCULATED GROUNDWATER VELOCITIES INSHALLOW PHREATIC ZONE SOUTH OF DIVIDE. . . .61

EXHIBIT I: MONITORING WELL LOCATIONS,CHROMATEX, INC. ........ .Back Pocket

EXHIBIT II: GROUNDWATER FLOW DIRECTIONBASED ON TRIANGULATION METHOD . .Back Pocket

EXHIBIT III: POTENTIOMETRIC SURFACE MAP,SHALLOW DNCONFINED ZONE ONAPRIL 25, 1988. . . . . . . . . .Back Pocket

EXHIBIT IV: POTENTIOMETRIC SURFACE MAP,SHALLOW UNCONFINED ZONE ONMAY 12, 1988. .......... .Back Pocket

INTRODUCTION

In March, April and May of 1988, a hydrogeologic

investigation was conducted, by INTEX, in the vicinity of

Chromatex Plant #2 (Plant *2) in West Hazleton, Luzerne

County, Pennsylvania (Figure 1). This investigation was

conducted under an administrative consent order between

Chromatex, Inc. and the U.S. Environmental Protection

Agency. It was initiated after a preliminary investigation

by the U.S. EPA/TAT discovered high levels of contamination

by volatile organic chemicals (VOC's), primarily

trlchloroethylen* (TCE), in residential wells that were

nearby, and apparently hydraulically downgradient of. Plant

#2. Plant 92 used TCE in Its industrial processes, and

Chromatex, Inc. was named by the U.S. EPA as being a

possible responsible party with respect to the groundwater

contamlnat ion.

The investigation consisted of the drilling, testing and

sampling of 12 wells, of various depths, surrounding Plant

#2. It was conducted in compliance with a work plan

submitted to the U.S. EPA in February of 1988, which was

approved and became part of the consent order (INTEX, 1988).

Minor revisions in the work plan were made in the field

during the investigation, with prior approval of the U.S.

EPA and its on-site technical observer, Versar Corp. A copy

RRI00005

FIGURE 1: LOCATION MAP, CHROMATEX PLANT #2, V7EST HAZLETON, PA

portion of the Conyngham, Pa., 7.5f quadrangle

- 2 -

of this work plan is included in this reoort as Apoendix I.' . ' OWG/JVtt

(Ret/)

The primary purpose of the Extent of Contamination Study was

to answer the questions set forth in the work plan,

submitted to the U.S. EPA by INTEX, in February of 1988:

What is the direction of groundwater flow in the

shallow phreatic zone beneath Chromatex Plant #2?

Does a groundwater divide exist in the shallow

phreatic zone beneath Chromatex Plant #2?

- What is the degree and distribution of VOC conta-

mination?

- What i» the velocity of groundwater flow In the

shallow phreatic zone?

- What head gradients and hydraulic connections exist

between the shallow phreatic zone and deeper zones

from which local residential wells withdrew water?

The answers to these questions should provide enough

Information to allow for a determination as to whether or

not the property of Chromatex Plant *2 was a source of the

VOC contamination. Other questions that should be answered,

in part, by this investigation are:

- What is the vertical distribution of VOC contami-

nation beneath Chromatex Plant #2.

- What are the general hydrogeologic conditions of the

fl R I 0 0 0 0 7- 3 -

deeper phreatic zones beneath the site, with regard

to aquifers and confining layers?0;.;-.

Additional purposes of this investigation, as stated in

Section II of the U.S. EPA administrative consent order, are

to estimate the length of time that the VOC contamination

has been in the grqundwater, and to develop information

which may be used in any possible future remediation of the

site.

This Investigation was strictly hydrogeological in nature

and was not intended to explore or make conclusions on the

cause of the VOC contamination or how It cane to be in the

groundwater, nor of its existence and distribution in

mediums other than the groundwater In the vicinity of Plant

#2.

Apparently, the only other hydrogeologic investigation

conducted in the area prior to the initiation of the extent

of contamination study was by EPA/TAT (Weston-SPER), in

October of 1987. This was an emergency response action

under the Superfund statute and consisted of sampling and

measuring water levels in the affected residential wells. A

soil gas survey was also conducted on, and adjacent to the

property of Plant #2. Trichloroethylene was found by

EPA/TAT in most of the residential wells in levels ranging

from 1.0 parts per billion (ppb) to 1,400 p*R|Q0008

- 4 -

iTrichlorocthylene was found in the soil gas in levels up to /fo,/'

10 parts per"million' (ppra). The findings of the report by

EPA/TAT stated that groundwater flows from the Chromatex

property toward the affected homes, and that relatively high

levels of volatile organic chemicals in the soil gas on the

Chromatex property suggest that the facility is a possible

source of the groundwater contamination.

Soil sampling was conducted, by I NT EX, in November and

December of 1987, at various locations around the Plant #2

property. This investigation revealed a concentrated area

of soil contamination along the southeast wall of the

building, near a retaining wall, with TCE and 1,1,1

trichloroethane levels In the hundreds of parts psr million

range. These concentrations of VOC*s in the soil indicate

that this ares is a probable msjor source of groundwater and

soil contamination. To date, the cause of the contamination

is not known.

A 1O»OOO gallon underground tank located in the front of

Plant *2r nesr the northwest corner of the building, and

used by Chromatex as an emergency overflow receptacle, was

also identified by EPA and the Pennsylvania Dept. of

Environmental Resources (D.E.R,). as a possible source of

the groundwater contamination. In November of 1987, the

contents of the tank was sampled and found to be filled with

water containing TCE in the parts per million range.

A R I Q O C Q 9- 5 -

Several other VOC's were also found in this water. Soil

sampling, conducted'by INTEX and split with the PaDER,

immediately following the excavation of piping leading from

Plant #2 to the tank revealed TOE contamination in the parts

per million range. However, the soil was sampled

immediately after the piping broke during the excavation

process, causing liquid to leak out Into the soil which was

subsequently sampled. Soil sampling was conducted several

months later by Versar Corp., at a depth of approximately

3.0 feet below the piping. Analysis of split samples

provided to INTEX showed the soil that was Initially found

to be contaminated revealed no contamination by VOC's.

Additionally, testing of the tank itself has proven It to be

airtight. At the prevent time. It is believed that the

Initial soil contamination found In the excavated trenches

was caused by leakage from lines broken during excavation,

and that this area is not a source of groundwater

contamination. Investigations in the tank area are still

continuing.

000 10H ' ' •

- 6 -

SITE CHARACTERISTICS

Plant #2 is located in a saddle on the crest of a low,

northwest-southeast trending ridge, which is truncated to

the northwest by Black Creek (Figure 2). Surface drainage

on the ridge, upgradient from Plant #2, is radial to the

north, west and south. In the vicinity of Plant *2, surface

drainage is to the northeast and southwest towards Black

Creek and its tributary (Figure 2). The residential

neighborhood in which wells were contaminated with VOC's is*

located to the northeast of Plant #2 (Figure 2).

_ 7 _ A R I O O O

KESIOCHTIAL AREANITH COMTAMIHATED WELLS

FIGURE 2: AREA FEATURES MAP

2 ,000 FT

- 8 -

A R I O O O I 2

0/r;,/"•f'i;

REGIONAL GEOLOGY AND HYDROGEOLOGY

Plant #2 and its surrounding area arc underlain by the

Pottsville Formation (Figure 3). This formation has been

described by Lohman (1937), as being made up chiefly of gray

conglomerate, white, gray and brownish sandstone. In some

places there occurs red and green sandstone, with a few thin

seams of coal. The regional strike of the Pottsville

Formation, in the area of West Hazleton is roughly east-west:,

trending very slightly in a northeast-southwest direction

(Figure- 3). The sit* is located in the glaciated area of

Pennsylvania, but there Is no evidence of glacial, deposits

In the immediate vicinity.

Lohman (1937) reports that groundwater In the Pottsville

Formation occure in the open fractures and crevices in the

hard conglomerate and sandstone. This Indicates that

secondary permeability is the controlling factor of

groundwater flow. Hells in the Pottsville Formation of

Luzerne County range in depth from ISO to 800+ feet, with

yields ranging from SO to 150 gpm. There is a large

seasonal variation in water levels in wells. Many wells

flow during the, wet season, but during the dry season water

levels drop many feet below the surface. The flowing

conditions are said to be caused by occasional beds of shale

A R I O O Q I 3- 9 -

CHROMATEX PLANT

Compiled by H. W SCHASSE, 1979-1980

- 10 -

which act as aquitards. As a comparison to this regional

information, it can be noted that Plant #2 has a 400 foot

deep well which yields 34 gpm. The water level in this well

in March of 1988 (the wet season) was 35 feet below the

ground surface.

. . A R I O O O I 5

SITE GEOLOGY

The lithologies underlying the Plant #2 site were

investigated during the drilling of the 12 monitoring wells

on the site. The locations of these wells are shown on

Exhibit I. In general, the rock types encountered during

drilling are consistent with Lohman's description of the

Fottsville Formation, and consisted mostly of fine, medium

and coarse grained quartz rich and arkosic sandstone. The

sandstones were also found to be rich in dark minerals,

believed to be amphibole. Many of these beds of sandstone

are Jointed, as evidenced by the many weathered fracture

faces that were observed in the drill cuttings. Hell #1OC

penetrated to a depth of 130 feet and Is the deepest of the

12 monitoring wells. The rock types encountered In this

well are representative of those encountered In other wells.

Its llthologic log is reproduced in Table 1. Lithologic

logs of the other wells can be found in Appendix II.

Geologic cross-sections with interpreted correlations can be

found in Figure 4.

A thin, coal bearing bed was encountered at three well

sites, #1, #10 and #11. It occurred at roughly the same

depth at all three well sites, between 4O.O and 44.5 feet

below the surface, and was therefore considered to be the

same bed. Using the depth of the coal bed in conjunction

with the elevation of the well casings, a standajrtj ~ p n

- 12 -

S CM •

™ oa.LkJ •

^SSVI « t—1/1 —I LU

Fla:t/jJi I

LLJW139 JJ3J

fl R I u u u i 8

FEET BELOW GROUND SURFACE^ ff> (J»? ? . y .? £. oJ.

rn

flfed)three-point problem was solved to determine the strike and

dip of the bedrock layers in the immediate vicinity of Plant

#2. Strike was calculated to be approximately due north,

with a dip of approximately 2 degrees to the east. These

attitudes should be considered approximate, since the

apparent depth of a rock bed can vary within a foot or two

at a depth of 4O feet, with the drilling method that was

used on this project. Strike and dip measured at nearby

outcrops was approximately N 45 degrees E with a dip of

15-25 degrees to the northwest (EPA/TAT, 10/87).

The bedrock attitudes obtained from the three point problem

are very different from those obtained from the measurement

of outcrops. It is possible that Plant *2 is on the axis of

an anticline or syncline, in which case the underlying rock

beds would appear to be flat-lying, as indicated by the

results of the three point problem.

There are very few outcrops In the area from which to obtain

measurements of bedrock attitudes. There are numerous

outcrop* In the mines and road cuts at some distance from

the site. However, due to the dipping and folded nature of

the rocks In this area, there is some doubt as to whether

the outcrops In the mines are the same as those in which the

project wells are located. Since the outcrops in the mines

are associated with relatively thick coal seams/ which are

not encountered in monitoring wells, it is probable that the

beds are not the same.

ARI 00020- 16 -

TABLE 1

LITHOLOG1C LOG OF MONITOR WELL #10C

DEPTH BELOW SURFACE (ft) ROCK TYPE

0-7 Yellow-brown clayey silt, little coarsesand.

7-9 Sandy silt with small chunks of sand-stone and arkosic sandstone.

9 - 15 Bedrock. Quartz-amphibole sandstone, wetat 10*. Arkosic in places. Weathered at14 ft.

15 - 24 Medium to coarse quartz-amphibole sand-stone, very weathered, wet .at 17*.

24 - 35 Black, medium sandstone, hard, frac-tured, trace of pyrite and free quartz.Wat.

35 - 42 Gray, medium grained sandstone, trace ofpyrite, very weathered, dry.

42 - 55 Fine'to coarse quartz-amphibole sand-stone, mostly amphlbole, trace of py-rite, some shale, trace of anthracitecoal and mica, dry.

55 - 61 Black, very fine sandstone, some grainsof iron oxide. Wet at 58*.

61 - 69 Medium to coarse, quartz-amphibole sand-stone, trace of pyrite and free quartz.Fractured, wet.

69 - 76 Very fine to fine black sandstone, lit-tle pyrite and quartz, wet,

76 - 87 Medium grained quartz-amphibole sand-stone. Hard, unfractured, wet.

87 - 125 , Black, medium sandstone, some quartzgrains, dry. No evidence of fractures,trace of mica. Weathered zones at 95'.Wet at 106'.

125 - 130 Black, very fine sandstone, soft, frac-tured, some free quartz^ wet.

. 17 _

MONITORING WELL INSTALLATION '

Twelve monitoring wells were drilled for this investigation;

one more than was originally proposed in the work plan.

Seven of these wells were drilled to depths ranging from 45

to 55 feet and were intended to monitor the upper 20 to 30

feet of the phreatic zone. The locations of these wells are

shown on Exhibit I, followed by the letter "A", or not

followed by any letter at all. These wells were given the

designation of "shallow" in the work plan.

Two wells were drilled to depths ranging from 8O.5 to 82

feet and were cased through the units monitored by the

previously described shallower wells. They were intended to

monitor what was apparently the deeper portion of the

unconfined phreatic zone. Their locations are shown on

Exhibit I, as well #1B and well *10B. These wells were

given the designation of "mid-range" or "intermediate", in

the work plan.

/ Two wells were drilled to depths of 110 feet and 130 feet.

They were cased through the units monitored by all the other

shallower wells. They were intended to monitor the first

water bearing zone encountered beneath an apparently

unfractured anTl impermeable layer occurring at a depth of

approximately 85 to 95 feet. The locations of these wells,

designated #1C and #10C, are shown on Exhibit I. TheseRRIOOH22

- 18 -

wells were given the designation of "deep", in the work

plan.

A twelfth monitoring well was added to provide information

on an apparent perched water table that was encountered

during the drilling of wells #10A, #10B and *UOC. This

well, designated as #10D, is IS feet deep. The term

apparent is used because not enough data is presently

available to confirm that it is definitely perched, or that

it is extensive enough to be called a water table. The fact

that water was encountered in the soil immediately above the

bedrock, and that this water occurs several feetr above the

water levels in nearby wells. Is adequate evidence for the

preliminary classification of perched. The location of well

*10D is shown on Exhibit I.

Construction details for all monitoring wells are presented

in Table 2.

All the wells were drilled using the air rotary method. An

in-line filter was used to prevent oil from the air

compressor from entering the drilling string and

contaminating the borehole. However, a non-petroleum based

vegetable oil was used to lubricate the drill bit.

Injection of water through the drill string was not used on

any well. The inner casings in wells *10B and *10C were

RR100023- 19 -

TABLE 2MONITORING WELL CONSTRUCTION DETAILS

WELL *

1A

IB

1C

2

3

4

5

1OA

10B

1OC

1OD

11

TOTALDEPTH(ft)

50.0

80.5

110.0

55.5

47.0

55.0

45.0

50.0

82.0

130. 0

15.0

55.0

SMALLESTDIAMETER

(in)

6

6

4

6

6

6

6

6

6

6

4

6

DEPTHOF INNERCASING(ft)

22

55

86.5

15

18

15.5

15

17

57

87

15

20

DEPTHOF OUTERCASING(ft)

NONE

NONE

NONE

NONE

NONE

NONE

NONE

NONE

2O

27.5

NONE

NONE

DEPTH OFINTERVALMONITORED

(ft)

22-50

55-8O.5

86.5-110

15-55.5

18-47

15.5-55

15-45

17-50

57-82

87-130

13-15

20-55

APPROX .YIELD OFMONITOREDINTERVAL

3.8

< l.O

1.3

2.33

1.00

3.75

1.1

2.5

< 1.0

1.5

< 1.0

2.0

Additional construction information can be found InAppendix II.

- 20 -

grouted by drilling an 8 inch diameter borehole to the depth

of the casing and pouring grout into the uncased borehole.

A 6 inch diameter steel casing, with its lower end sealed

with a teflon plug, was forced to the bottom of the

borehole, as specified by the work plan. This method proved

to be unsatisfactory, as the pressure at the bottom of the

hole forced the teflon plug several feet up into the casing.

Subsequently, the deeper casings in wells #1B and #1C were

grouted in place using a standard tremie pipe method. This

change in the work plan was agreed upon in the field by the

EPA and Versar Corp. The shallower casings in wells #1A,

*2, *3, *4, *5, 4T10A and *11 were grouted by inserting the

casing Into an oversize borehole and pouring grout in from

the surface. The outer casings in wells *10B and *10C, and

well *1OD were grouted in the same way. Grout was allowed

to harden for at least 24 hours before a well was completed

to its total depth* Grouting details for individual wells

can be found In Appendix II.

The monitored Intervals in all wells, except #10D, were

completed as- open, unscreened boreholes, owing to the

competency of the bedrock. The bedrock that was encountered

in the wells, although it was sometimes highly weathered,

was obviously competent enough to maintain an open hole.

The monitored interval in well #10D was completed using a

torch-slotted 4 inch diameter steel casing, with its outer

annulus packed with pea-size quartz gravel.

/ Q- 21 -

The wells were developed using the air lift method.

Development to clarity, and measurement of water level

immediately following development, was not possible due to

the very low yield. However, the majority of water samples

collected, following purging, were essentially clear.

The drilling rig, and all associated equipment, was *

decontaminated before it was used at a new well site. All

decontamination took place at the designated decontamination

area (Exhibit I). Decontamination was accomplished using a

high pressure water rinse, followed by steam, followed by

another water rinse, in accordance with the work plan.

The ground around each well site was protected during

drilling with a doubled thickness of plastic tarp. All rock

cuttings and other material ejected from the wells was

collected in a large tub and transferred directly into

plastic lined, 55-gallon steel drums. The drums were sealed

and moved to the designated storage area at the end of each

work day. In accordance with the work plan (Exhibit I).

A R I Q P - 2 6- 22 -

GROCJNDWATER QUALITY ANALYSIS

Groundwater samples were collected from each monitoring

well. Samples were collected from the 7 shallow wells over

a 3 day period in order to obtain a relatively instantaneous

picture of the state of contamination in the shallow

phreatic zone. Sampling of all 12 wells took place between

April 19 and April 26 of 1988.

All the wells, except for *1B, #1OB and #10D were purged of

a minimum of 3 times the volume of water In the well, to

ensure that the sample collected was withdrawn from the

formation and was not stagnating in the well. Hells #1B,

#10B and *10D had such extremely low yields that they did

not recover quickly enough to. allow the removal of 3 well

volumes. Actual, volumes purged from each well are shown in

Table 3.

Well *1B was actually sampled twice to determine if any

cross-contamination had occurred between the shallow and

deeper unconfined zones at the well #1 cluster, where an

uncased, ungrouted borehole was left open to a depth of 85

feet for a period of several hours during the drilling of

well *1C.

A concern over cross-contamination existed for well

- 23 -

TABLE 3

CHROMATEX MONITORING WELLPURGING DATA

DATE VOLUME NO. OF TOTAL METHODWELL SAMPLED TIME OF WATER VOLUMES VOLUME OP* (1988) SAMPLED IN WELL (gal) PURGED PURGED (gal) PURGING

1A

IB

IB

1C

2

3

4

5

10A

1OB

10C

10D

11

4/20

4/15

4/19

4/26

4/22

4/22

4/21

4/21

4/20

4/19

4/26

4/26

4/21

12

2

4

11

12

4

4

6

21

6

3

7

12

: 15pm

: 00pm

:45pm

:30pm

:45pm

:35pm

: 16pm

:45pa

: 15pm

:40pm

:00pm

:00ptt

:30pm

NOTE:

37

76

75

S3

71

42

61

51

45

84

145

11

65

.21 3

.43 1

.43 1

.94 3

.08 3

.34 3

.14 3

.65 3

.02 4.89

.7 1.13

.53 3

.85 <1

.0 3

111

76

75

161

213

126

183

154

22O

96

438

4

198

.64

.43

.43

.82

.24

.9

.43

.96

.0

.03

.0

.5

.0

Bailing

Bailing

Balling

Bailing

Bailing

Bailing

Balling

Bailing

Pumping

Pumping

Pumping

Bailing

Pumping

Well #1B was purged andsampled on two separatedates.

- 24 - A R I 0 P n 2 8

because, during the drilling of nearby well #1C. and open

borehole was; left: fpr several hours, allowing possible

mixing, in the borehole, of water between shallow and

intermediate zones.

Well #1B was sampled approximately 1.5 days after the

open-borehole event, in an effort to collect a sample of

groundwater before any possible contamination could reach

well *1B from well #1C. Sampling again 4 days later, in

conjunction with drawing in additional water from another

purging operation, would give an indication of whether or

not contaminated groundwater had moved in. All sample* from

the well #1 cluster were uncontaminated.

All purging was accomplished using either a 1/2 hp

submersible pump or 3 Inch diameter teflon bailer (Table 3) .

Purging was completed in such a way that several feet, of

water remained at the bottom of the wells to minimize loss

of volatile organic chemicals. When possible, the water

level in the wells, during purging, was not allowed to drop

below the water bearing zones. No well was ever purged to

dryness. Low yielding wells were purged very slowly to

allow several feet of water to remain in the well. All

purged water was either placed in drums and moved to the

drum staging area, or returned to the well from which it was

removed, as part of the hydraulic conductivity tests.

- 25 -

When purging was completed, groundwater samples were

immediately collected from each well using a 2 inch diameter

teflon bailer equipped with a titration valve. Samples were

collected in standard 40 ml, untreated volatile organic

chemical vials. Two sample vials were collected by INTEX

personnel, from each well and 2 samples were collected by

Versar Corp. personnel, the U.S. EPA on-site observer, from

several selected wells. INTEX samples were immediately

stored on Ice. All samples were sealed in Insulated

containers and shipped by overnight carrier to Quality

Control Laboratory, Inc. in Southampton, Pennsylvania.

All purging and sampling equipment was cleaned, after use in

each well, at the designated decontamination area.

Decontamination consisted of rinsing and scrubbing equipment

with potable water, rinsing with Isopropyl alcohol, with

distilled water used as a final rinse. The purge pump was

rinsed both internally and externally. This was

accomplished by inserting the pump in a 55-gallon drum of

potable water and running it at open dishcarge (approx. 15

gpm) for several minutes.

Equipment blanks were collected after decontamination for

each well (i.e., equipment blank #11 would be collected

after decontaminating equipment used in well #11), except

wells #2 and #5, for which field blanks were taken.

- 26 -

All samples were analyzed for the following compounds:

Chlorome thane

Broroomethane

Vinyl Chloride

Chloroethane

Methylene Chloride

1 , 1-Dichloroethylene

1 , l-Dichloroethane

1 , 2-Dichloroethylene ( total )

Chloroform

1 , 2-Dlchloroe thane

1,1, 1-Trlchloroethane

Carbon Tetrachlorlde

Bromodi chlorome thane

1 , 2-Dichloropropane

cis-1 , 3-Dichloropropcne

Trichloroethylene

Dibromochloromethane

1,1, 2-Trichloroethane

Benzene-

trans-1 f 3-Dichloropropene

Bromoform

Tetrachloroethylene

1,1,2, 2-Tetrachloroethane

Toluene

Chlorobenzen* -

Ethylbenzene

- 27 -

The method of analysis used was EPA method 624 (Gas

Chromatagraph/Mass Spectrometer).

Volatile organic chemicals were detected in wells #2, #10A,

#10D and #11. Individual chemicals detected in each well

are presented in Table 4.

Th«re were no volatile chemicals detected in any other well.

Low levels of contamination were found in two field blanks.

Well *2 and Well #10A. However, no contamination was found

in groundwater samples collected from wells after collection

of the contaminated field blanks. Apparently, the air

drying phase of the decontamination procedure caused

volatilization .of the remaining residual VOC's.

Additionally, the Well #10A blank was contaminated with

compounds not found in the well water, suggesting the

possibility of a contaminated container, or contamination in

the laboratory. Chemical analysis data sheets may be found

in Appendix III.

The geologic and hydrologic relationships between the

contaminated and uncontaminated monitor wells, possible

contamination sources and contaminated residential wells are

discussed later in the report.

- 28 - fl R I 0 0 0 3 2

TABLE 4

VOLATILE ORGANIC CHEMICALS DETECTEDIN CHROMATEX MONITORING WELLS

WELL # VOLATILE ORGANIC CHEMICAL IN ug/1 (ppb)

1,1,1-Trichloroethane 630Trichloroethylene 600

1OA 1,1-Dichloroethylene 361.1-Dlchloroethane 211.2-Dlchloroethylene ISO1,1,1-Trichloroethane 2,30OCarbon tetrachloride 5.8Trlchloroethylene 9,900

10D 1,1-Dichloroethane 9.81,2-Dichloroethylene 841,1,1-Trichloroethane 20Trichloroethylene 570

11 1,1-Dichloroethylene 28O1.1-Dichloroethane . 3701.2-Dichloroethylene 1,0301,1,1-Trichloroethane 13,000Trichloroethylene 17,000Tetrachloroethylene 35Toluene 140Ethylbenzene 29

- 29 -

WELL TESTING

PIEZOMETER TESTS

The hydraulic conductivity of the water bearing zones in

each well was calculated using data gathered during

piezometer tests. These tests consisted of the rapid

injection or withdrawal of a volume of water into a well,

followed by the measurement of water level with time as it

recovered to static. The hydraulic conductivity of the

water bearing zone is a function of the duration of the

recovery period, the radius of the well, and the thickness

of the water bearing zone exposed in the well.

The piezometer test method chosen for this investigation was

that developed by Hvorslev in 1951. This method is one of

the simplest of the piezometer test methods and was

developed for use with point piezometers, rather than for a

well open over a large thickness of an aquifer. It is

believed to be the most appropriate method for use with the

wells at the Chromatex site, since the water bearing zones

in these wells consist of isolated layers of fractured

bedrock which comprise a relatively small portion of the

entire open length of each well.

The Hvorslev method was developed for unconfined conditions.

Because of it's simplicity, and the minimal amount of of

R R I O O H 3 U- 30 -

field and well construction data needed, it was deemed to be

the method least prone to error in the very heterogeneous

fractured bedrock at the Chromatex site. Aquifer test

methods designed for fractured bedrock require detailed

knowledge of fracture geometry, and make methematical

assumptions that would make then at least as susceptable to

error as the Hvorslev method.

The Hvorslev equation is as follows:

K = r2 In (L/R)2L (To)

Where: K - hydraulic conductivity in ft/hr.

L » length of well screen (ft)

r » radius of well above screen (ft)*

R - radius of well screen (ft)

To » time lag (hrs) (see Appendix IV)

Since the wells at the Chromatex site are unscreened, (L)

would equal the saturated thickness of the water bearing

zones In the well, which Is obtained from the drilling logs.

Additionally, the wells are of the same diameter for their

entire length.

None of the fracture zones were isolated, using packers or

similar equipment, for the piezometer tests. This would not

cause a problem since the total thicknesses of fractured

- 31 -

zones were added to obtain the effective length of open

interval (Le.) in each well. The thickness of unfractured,

or much lower permeability layers in the well would not

contribute to Le , and need not be sealed off for the test.

The thickness of water bearing zones in each well was based

on well log information. The thickness of a particular

water bearing zone was based on the apparent thickness of a

unit from which an observable yield was obtained. Sometimes

a unit was a wet granular bed which showed water shortly

after penetration, or a fracture zone Which yielded water

immediately.

Relative yields were also considered when assigning

saturated thickness. In a well which has a water bearing

zone of estlmatable yield (app'rox. 0.5 gpm or more), an

extremely low yielding damp zone would not be considered.

However, these damp zones would be considered in a well that

had an unmeasureably low yield.

For use with the Chromatex wells, the Hvorslev equation can

be simplified to the following:

- r2 In (Le/r). 2 (Le) To

Where: K = hydraulic conductivity in ft/hr

r = well radius (ft)

- 32 - fl "

Le = effective thickness of water bearing

zones in well (ft)

To = time lag (hrs)

All monitoring wells were tested using the above described

method (including well #10A, which was also subjected to a

pumping test). Repeat tests were conducted on wells #1A,

#1C, 92, #4, #10B, #10C and #11 in order to determine the

reliability of the field procedure. As an additional check,

a piezometer test was conducted on well #10A, which was also

test pumped, to observe the compatibility of the pumping

test and piezometer test results. The results of the

piezometer tests are presented in Table 5.

Worksheets and calculations for the results presented in

Table 5 can be found in Appendix IV.

All injection tests were conducted after the wells had been

purged for sample collection purposes, and had recovered to

original static levels. All injected water was that which

had been previously removed from the same well, to reduce

concerns that non-native water could alter existing water

quality in the formation.

Attempts were made to-test well #10D, which monitors a

perched water zone. However, the well did not recover when

water was removed from it, and too little water was removed

RR100037- 33 -

TABLE 5A

PIEZOMETER TEST RESULTS: SHALLOW WELLS

INJECTION WITHDRAWAL HYDRAULICWELL # TEST * TEST TEST CONDUCTIVITY (ft/3)

1A 1 X 4.72 X 1CT-51A 2 X 5.55 X lO'-S2 1 X 1.10 X 10"-52 2 X 3.45 X 10"-53 1 X 1.80 X 10"-54 1 X 7.27 X 10"-54 2 X 1.01 X 10"-45 1 X 7.70 X 10"-610A 1 X 1.53 X 10~-511 1 X 3.69 x 10"-511 2 X 3.46 x 10"-5

GEOMETRIC AVERAGE 3.O4 x lO'-S

Maximum K 1.01 x 10~-4Minimum K 7.70 x 10~-6

A R I 0 0 0 3 8

TABLE 5B

PIEZOMETER TEST RESULTS: INTERMEDIATE WELLS

INJECTION WITHDRAWAL HYDRAULICWELL # TEST # TEST TEST CONDUCTIVITY (ft/s)

IB 1 X 2.16 x 10"-610B 1 X 2.95 x 10--610B 2 X 2.8O x 10~-610B 3 X 2.95 X lO'-e

GEOMETRIC AVERAGE 2 . 70 X 10"-6

Maximum K 2.95 x 10~-6Minimum K 2.16 x !O'-6

TABLE 5C

PIEZOMETER TEST RESULTS: DEEP WELLS

INJECTION WITHDRAWAL HYDRAULICWELL * TEST * TEST TEST CONDUCTIVITY (ft/s)

1 C I X 5 . 9 X 10~-51C 2 X 8.5 X 10"-510C 1 X 5.7 x 10--610C 2 X 4.4 X 10*-6

GEOMETRIC AVERAGE 1.89 X 10"-5

Maximum K , 8.5 x 10"-5Minimum K 4.4 x lO'-S

39

- 35 -

cto make for an effective injection test. This well would /•have to be tested using the injection of a relatively large

volume of fresh water to build up enough head to induce flow

into the formation. This was not done since the U.S. EPA

had requested that fresh water not be used for injection

tests.

Well #10D is presently useable for permeability testing.

It's poor recovery suggests that: it's gravel pack may be

clogged. Additionally, disruption of the ground surface by

compressed air during the drilling of nearby well *10A

presents the possibility that the characteristics of the

shallow subsurface may have been altered. Therefore, any

permeability data that may be gained froa this well in the

future muat be considered suspect .

The test results for the shallow wells indicate that'

permeability in the shallow phreatic zone is relatively

uniform across the site, considering that the medium is a

he t erogenous fractured bedrock, which typically exhibits

wide ranges in hydraulic conductivity over small areas.

The deeper portion of the unconfined zone (monitored by the

intermediate wells) is an order of magnitude less in

permeability than the overlying zone, and therefore, would

behave as a semi-confining layer, or aquitard. The zone

monitored by the deepest wells appears to be slightly higher

- 36 -

in permeability than the intermediate zone, and slightly

lower than the shallowest zone. Geometric, rather than

arithmetic, means were used to calculate average

permeability, as outlined in Fetter, 1988.

RR1000UI

- 37 -

PUMPING TEST ON WELL #10A

Test Procedure and Results

In accordance with the work plan, a pumping test was

required to be conducted on one well in the #10 cluster.

Well #10A was chosen because it had the highest apparent

yield of any well in the cluster, and because preliminary

sampling indicated that it contained the highest levels of

volatile organic chemicals in it's cluster, namely

trichloroethylene and 1,1.1 trichloroethane (Appendix III).

The pump used waa a Gould's 1/2 hp electrical submersible

pump, with 1.0 inch ID polyethylene discharge hose.

Discharge was controlled with an adjustable gate valve and

measured approximately every 5- milnutes with a calibrated 5

gallon bucket and stopwatch. Depth to water was measured

with a Soiltest water level indicator with cable marked at

1.0 foot intervals. Datum was top of well casing.

The pumping test had a total duration of 342 minutes (5.7

hours). It was pumped at a rate of 2.O gpm for 235 minutes,

at which time the pumping rate was increased to 3.0 gpm and

adjusted to 2.5 gpm for the remaining 107 minutes of the

test. When the pump was shut off, recovery of the water

level was measured for 95 minutes.

- 38 - A R I 0 0 0 k 2

During the 2.0 gpm portion of the test, a maximum drawdown

of 10.70 feet was observed (Appendix V). As shown on Figure

5, drawdown was consistent and continuous until 80 minutes

into the test, except for a period at 20 minutes where

discharge slipped to 1.5 gpm. At 80 minutes into the test,

the water level stabilized and remained constant, with minor

fluctuations caused by constant adjustments to maintain

constant discharge (Figure 5). This leveling off of water

levels may have been caused by delayed yield from aquifer

storage, diminishing casing storage, or the reaching of

equilibrium of the well's cone of depression.

After allowing the well to pump at 2.0 gpm for an additional

155 minutes, the discharge was Increased to 3.0 gpm and

adjusted to 2.5 gpm to further stress the aquifer and

provide additional data. After 7 minutes of pumping at 3.0

gpm, the pumping; level in the well dropped below 32.75 feet,

at which time cascading was heard in the well, indicating

that the pieziometrlc surface of the cone of depression had

dropped below a water bearing zone, and that dewaterlng was

taking place. The rapid drawdown that occurred afterward

suggests that the dewatered zone, at approximately 33 feet,

provided a significant percentage of the well's total yield

(Figure 5). Within 95 minutes after the pumping level in

the well passed 32.75 feet, it had dropped to within a few

inches of the pump intake, which was set at 1.0 foot above

the bottom of the well, and the test was concluded.

RRl '"

- 39 -

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The recovery of the water level was measured for 95 minutes-'.-": . . (h^,after the test ended. During that time, it recovered to

within 2.18 feet of the original pre-pumping water level,

for 90* recovery {Figure 6, Appendix V).

The data, obtained from the pumping test indicates that the

main water bearing zone of the shallow phreatic zone is

located at a depth of approximately 33 feet. According to

the well log, this is a fractured sandstone approximately

2.5 feet thick. The pumping test data also suggest* that

the water bearing zone encountered at 45 feet Is not capable

of yielding 3-4 gpm as was estimated during drilling.

- 41 -

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Aquifer Characteristics

The drawdown data obtained from the pumping test was

calculate the characteristics of the aquifer penetrated by

well #10A. Two aquifer characteristics were calculated,

transmissivity and storativity.

Transmissivlty was calculated using the Jacob straight line

method. Due to the low discharge at which the test was

conducted, the relatively large well diameter, and the

relatively small specific capacity compared to well

diameter, it is believed that drawdown during the early part

of the test was influenced by casing storage.

Therefore,, an approximation of the- tlma after which casing

storage effects were Insignificant was calculated using the

following equation (Schafer, 1978):

tc - 0-6 (dc2 - dp2)Q/s

Where: tc * time (min) after which casing storage

effect becomes negligable

dc « diameter (In) of well bore

dp * diameter (in) of pump riser pipe

Q/s * specific capacity of well at time tc

- 43 -

In this case:

- dc = 6-inchesffied)

dp = 1.25 inches

Q/s = was estimated by using the average

specific capacity of the well between

1O and 50 minutes into the test..

The calculation yields a tc of 77 minutes, which is very

close to the 80 minute time duration when water levels began

to stabilize. Therefore, drawdown data from the first 80

minutes of the test probably does not reflect the response

of the aquifer to pumping.

Iterations, as recommended by Schafer, were not used in this

case, since this equation was used as a check against

qualitative evidence that casing storage may have affected

the well until t-8O minutes. It should be noted that at

t*8O minutes, almost 1OX (9.6%) of the water that had been

pumped from the well was casing storage. Iterative

calculations may indicate, mathematically, that effects of

casing storage dissipated earlier than 80 minutes, however,

we feel the qualitative evidence is more reliable in this

case, considering the approximate nature of aquifer testing

in fractured bedrock terrain.

Transmissivlty was calculated using the Jacobs straight line

method. This method is a standard tool of aquifer analysis

and is discussed in Fetter, 1988, and Freeze and Cherry,

1979. Drawdown data and recovery data from the pumping tesrt

was used to obtain several transmissivity values of 176

gpd/ft, 198 gpd/ft and 226 gpd/ft (Appendix V). These

transmissivity values have a narrow range and an average of

2OO gpd/ft. If it is assumed that almost all of the water

supplied to the well is provided by the 2.5 foot thick layer

of sandstone at 33 feet of depth, and the 6.5 foot layer at

40 feet, a hydraulic conductivity of 3.43 x 10"-5 ft/s is

obtained. This compares to that of 1.53 x 10~-5 ft/s

obtained from Well #10A using the Hvorslev method. It falls

within the range calculated for all of the shallow wells and

compares very closely with the average of 3.04 x 10"-5 ft/s

from the shallow wells.

Calculation of transalsslvlty'using data from the 3.O gpm

portion of the test used a drawdown of 12 feet. .The •

drawdown of 12 feet was used in an effort to compensate for

the possibility of increased drawdown when the water bearing

zone at approximately 33 feet began to dewater. Although

this is only a semi-quantitative calculation, it does

provide additional supporting data for the purposes of

comparison.

No other wells of the same depth were affected during the

test, so there was no observation well data with which to

confirm transmissivity data or calculate the storage

RRIOOOU9- 45 -

*.coefficient. The approximate storage coefficient was

calculated using the Jacobs variation of the Theis equation.

The Jacobs equation was used to calculate approximate

storage coefficient since there was no observation well data

available with which to calculate this value in the standard

way. It is believed better to have some site specific

semi-quantitative data related to effective porosity, with

which to compare published data rather than to have none at

all. The Jacobs equation is as follows:

s * in 2,25 *T

Where: s = drawdown at time t (ft)

Q « discharge (cfs)

T = transmisaivlty (ft*2/s)

t - time (aec)

r « well bore radius- (ft)

S « storage coefficient

See Appendix V for calculations.

Storage coefficients (specific yield) calculated using

drawdown data of the 2.0 gpm portion of the test range from

0.046 to 0.052. Additional storage coefficients calculated

for various portions of the test range from 0.012 to 0.16

(Appendix V) . These storage coefficients exhibit a range

not only because of the approximate nature of the

calculations, but because the storage coefficient of an

RR I 00050- 46 -

Ok.-.ftfit,

unconfined aquifer changes with time during a pumping test.

The range of values'obtained is consistent with those

published by Walton (1985), which states that the specific

yield of typically low permeability materials, such as clay

and silt, ranges from 0.01 to 0.30.

Effects of Pumping Test on Nearby Hells

During the pumping test, the water levels in the other wells

in the *1OC cluster were measured periodically, as were the

water levels In well *11 and the well #1 cluster. These

water levels are presented In Table 6.

Two wells, #10B and *10C display definite signs of being

affected by the pumping of well #10A, in the form of

continuously decreasing water levels during the test and an

Increase in water levels when the pump was shut off. Well

#10B exhibits a total drawdown of O.82 feet and well #10C

exhibits a total drawdown of 0.56 feet. (Figure 7).

The drawdown In wells #10B and *10C Is small compared to

that which occurred In the pumping well, especially

considering the short distance that separates the wells. It

is possible that upward vertical flow from, the zones

monitored by wells #10B and tflOC was induced when the head

in the shallow aquifer became less that that existing at

greater depths.

f t R l O O O S !- 47 -

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- 49 -

uO

Well #10D displays drawdown of 0.18 feet during the test.

Observations made during drilling, and water levels in wells

#10A and #10D indicate that the zone monitored by well #10D

is perched above the true water table.

Presently available data is not sufficient to allow a firm

conclusion of whether or not a connection exists between the

perched zone and the shallow phreatic zone. However, this

possibility cannot be ruled out. Considering the

possibility of disruption of soil permeability in the area

of well *ioD, this may not be the appropriate place for

future investigation Into the characteristics of the perched

zone.

Solving the Jacobs variation of the The is equation for the

distance from the well at which drawdown « 0, yields a

radius on the order of 15 feet. Although this may not be

the exact radius of the cone of depression, it offers one

explanation as to why other shallow wells were not affected

by the test. The closest shallow well, #11, is 150 feet

away.

In closing this section, it should be noted that this

pumping test was conducted in a bedrock terrain, in which

apparently all the permeability is secondary. Drilling data

and the general nature of fractured bedrock indicates that

- 50 -

this .porous, medium Is quite heterogeneous. Aquifer analysis

equations were derived for use with ideal, homogeneous

aquifers (such as would occur on the coastal plain, etc.),

and have limitations when used in fractured bedrock terrain,

since bedrock aquifers are not usually homogeneous over

large areas. However, data obtained from this pumping test

agrees with piezometer test data. This suggests that the

hydraulic characteristics of the shallow phreatlc zone do

not vary significantly over the project area.

00*55

- 51 -

GROUNDWATER FLOW AND VELOCITY

GROUNDWATER FLOW DIRECTION

The depth to the water table was determined by talcing water

level measurements in each shallow well on April 25, 1988

and May 12, 1988. Water levels in the shallow wells

Increased by an average of 4.4 feet between the two periods

of measurement, probably in response to recharge due to the

rainfall that occurred during this period. These

measurements are presented in Table 7. Only the wells which

monitor the shallow unconfined zone, were used to define the

actual water table. The elevation of the water table across

the site was determined by surveying the elevations of the

tops of the well casings and subtracting the depth to water

In shallow wells from this elevation (Exhibit I).

The direction of groundwater flow across the site was

determined using two different methods. The first method

Involved defining a plane using the water level elevation of

3 monitoring wells and then calculating the direction of

slope of the plane. The direction of the slope represents

the general direction of flow of groundwater within the

triangle formed by the three wells. The calculated flow

directions across the site for the two dates of measurement

are shown on Exhibit II.

ARI 00156

TABLE 7

WATER LEVEL MEASUREMENTS IN CHROMATEX MONITORING WELLS

(DEPTHS IN FEET BELOW TOP OP CASING)

WATER LEVELS ELEVATION OF

WELL * 4/25/88

1A 21.11

2 9.50

3 20.35

4 15.25

5 12.00

10A 19.40

11 10.11

IB 30.06

10B 24.37

1C 30.35

10C 25.66

10D 14.82 .

. ———————————— j_-

5/12/88

16.57

7.21

15.66

11.81

8.00

14.53

6.33

24.75

18.96

. 24.94

20.17

11.54

Ur UJT WCLiL. UASINU

(ft. MSL)

1547.34

1536 .-07

1536.33

1552.60

1538.77

1537.39

1539.33

1547.91

1538.16

1547.88

1539.00

1538.33

- 53 -VRIOO-.57

Groundwater flow directions across the site were also

determined using potentiometric surface maps. The fw. _.....— ..—————-_—————^-.____-————— ^

groundwater elevations in the shallow wells were contoured

to obtain the approximate configuration of the water table

surface on the two dates of measurement. The interpreted

potentiometric surfaces and flow directions are shown on

Exhibits III and IV.

The data obtained by both methods of flow direction

determinations indicate the presence of a groundwater divide

trending roughly east-west across the center of the site.

There is an excellent correlation between flow directions

determined using the two different methods on the northern

side of the divide. It is also found that direction of

groundwater flow does not change significantly when there is

a change of several feet in the elevation of the water

surface.

Groundwater flow directions on the southern side of the

divide are not consistent between the two methods of

determination. Flow direction calculated using the

triangulation method trend southwest while flow directions

obtained from the potentiometric surface maps trend roughly

due south.

There are several possible explanations for the

discrepancies between the two methods. The most obvious

- 54 - A R |

explanation is the sparsness of data points on the southern

side of the.'divide, - resulting in minimal control when

contouring. Another reason could be that flow directions

calculated using the triangulation method could be skewed if

some of the data points used are on the other side of the

divide.

Water level elevations in wells in the #1 and *10 clusters

show a head gradient in the downward direction. This

Indicates that the site is in a recharge area, where

groundwater tends to flow from shallow zones toward

progressively deeper zones. However, the piezometer test

results and water quality testing in the intermediate and

deep wells at the #10 cluster suggest that very little, if

any, vertical groundwater flow occurs in the immediate area.

Since only two intermediate depth wells and two deep' wells

were drilled, it is not possible to calculate groundwater

flow directions in the zones monitored by these wells with

the available data. The use of other nearby wells, such as

residential wells or the Chromatex facility well, to

calculate flow in the deeper zones was not considered

appropriate. All evidence Indicates that those wells are

cased to a maximum of 40 feet. Therefore, this construction

makes them incompatable for use with the more deeply cased

project wells. EPA/TAT calculated groundwater flow

direction using the residential wells exclusively. Their

flR!00059

ttfcalculated flow direction was very similar to those ^''

calculated for this report in the vicinity of the well fflO

cluster.

The gradient of the water table, on either side of the

divide, was calculated using the same 3 point triangulation

technique as was used to calculate direction of flow.

Gradients were also obtained from the potentiometric surface

maps. This data is presented in Table 8.

- 56 - AR I 00060

(Red)

TABLE 8A

WATER TABLE GRADIENTS AT CHROMATEX PLANT #2

CALCULATED USING TRIANGULAITON METHOD

WELLS FROM WHICH

WATER LEVELS WERE

USED TO CALCULATE

HYDRAULIC GRADIENT 4/25/88 5/12/88

1A, 10A, 11

4, 10A, 11

5, 10A, 11

1A, 2* 11

3, 4, 11

1A, 2, 4

1A, 2, 4

——— norxn or

0

O

0

——— South of

0

0

0

0

uiva.ae ——— —

.048

.050

.043

Divide ———

.0065

.054

.013

.051

0

0

0

0

0

0

0

.042

.045

.040

.009

.025

.018

.046

R R 1 0 0 0 6- 57 -

TABLE 8B

WATER TABLE GRADIENTS AT CHROMATEX PLANT #2

OBTAINED FROM POTENTIOMETRIC CONTOUR MAPS -

4/25/88 5/12/88

North of Divide

South of Divide

Gradients 0.050 0.039 - 0.043

Gradients 0.086 - 0.090 O.O69 - O.O72

- s s - RRI 00062

VELOCITY OF GROUNDWATER FLOW

By utilizing the previously collected data on hydraulic

conductivity, specific yield and water table gradient, an

approximation of the velocity of shallow groundwater flow at

the site can be calculated. The calculation is as follows

(from Walt on, 1970):

Ahv = sy

Where: v » groundwater velocity in tt/m

K « hydraulic conductivity in ft/*Ah~L~~* hydraulic gradient

Sy - specific yield

A number of velocities were calculated to observe

differences in either side of the divide, and to obtain

maximum, minimum and range of velocities. Several possible

velocities were calculated using the range of data obtained

from previous calculations of hydraulic conductivity,

specific yield and hydraulic gradient.

Calculated groundwater velocities are presented in Table 9,

Each pair of high and low values presented In Table 9

represent calculations using progressively less conservative

data, gradually approaching an approximate median.

A R I Q O Q 6 3- 59 -

TABLE 9A

CALCULATED GROUNDWATER VELOCITIES IN SHALLOWPHREATIC ZONE AT CHROMATEX PLANT #2

NORTH OF DIVIDE

AhK (ft/s) Sy — v (ft/s) v (ft/day) COMMENTS

1.01 x 10~-4 0.012 0.05 4.2 x 10~-4 36.26 max.calcu-lated velocity

7.70 x 10"-6 O.16 O.39 1.0 x !O'-6 0.16 min.calcu-lated velocity

7.27 x 10"-5 0.014 0.048 2.49 x 10'-4 21.53

1.10 x 10"-5 0.081 O.040 5.43 x 10~-6 0.45

5.55 X 10"-5 0.022 O.045 1.13 X 10'-4 9.81

1.53 x; 10"-5 0.07 O.042 9.18 x 10*-6 0.79

4.t2 x 10"-5 0.035 0.043 5.8O X 10"-5 5.01

1.80 X lO"-5 O.O52 0.043 1.4 X 10~-5 1.29

3.04 x 10"-5 0.046 0.043 2.84 x 10"-5 2.45 approximatemedian

fl R I 0 n n- 60 -

TABLE 9B

CALCULATED GROUNDWATER VELOCITIES IN SHALLOWPHREATIC ZONE AT CHROMATEX PLANT #2

SOUTH OF DIVIDE

K (ft/s) Sy ^- v (ft/s) v (ft/day) COMMENTS

1.01 x 10~-4 0.012 0.09 7.57 x 10~-4 65.00 max. calcu-lated velocity

7.70 x 10~-6 0.16 0.0065 3.12 x 10*-7 0.03 min. calcu-lated velocity

7.27 x 10'-3 0.014 0.086 4.46 X !O'-4 38.53

1.10 X 10--5 O.081 0.009 1.2 x 10'-6 0.10

5.55 x 10--5 O.O22 0.072 1.82 x 10"-4 15.69

1.53 X lO'-S 0.07 0.013 2.8 x 10"-6 0.24 ;

4.72 X 10"-5 0.035 0.069 9.3O x 10"-5 8.03

1.80 X 10"-5 0.052 0.018 6.2 X 10~-6 0.53

3.04 x 10"-5 0.046 0.051 3.37 x !O'-5 2.90 approximatemedian

f l R i o o n e s- 61 -

Groundwater flow velocities on either side of the divide

exhibit ranges over 3 or 4 orders of magnitude. It is most

probable that both the extremely high and extremely low

velocities are unrealistic, especially the high values,

since they appear to be extremely rapid for groundwater flow

in low permeability fractured bedrock. It is interesting to

note that the median values of velocity on both sides of the

divide are very similar.

- 6 2 -

HYDROGEOLOGY OF THE PROJECT AREA

GENERAL

The hydrogeology of the Pottsville Formation underlying

Chromatex Plant #2, to a depth of approximately 100 to 130

feet, is characterized by relatively low permeability.

Additionally, it appears that secondary permeability is

dominant over primary permeability, if there is any primary

permeability at all. Based on interpretation of data from

the drilling, testing and sampling of the on-site monitoring

wells, this section, of the Pottsville Formation can be

divided up into 5 distinct hydrogeologic units. They are

described below, beginning with the shallowest unit.

UNIT 1: Perched Zone Water Table

An apparently perched water table has been found to exist in

the vicinity of the well #10 cluster and in the area of well

#11. It occurs at a depth of approximately 11 feet at well

#10, and has been observed to be within 2 feet of the

surface in backhoe pits excavated near well #11. This zone

is monitored by well #10D. Whether or not this perched zone

exists outside of these two areas is not known at this time,

nor is it known if it is seasonal or perennial. This unit

yielded enough water to require that it be cased off during

the drilling of wells #10B and #10C. No perched water was

- 63 -

observed during the drilling of well #11, but backhoe pits

in this area have filled with water fairly quickly, during

previous investigations. This water table is believed to be

perched at the bedrock/soil interface, resting in the soil

on top of the bedrock. Information on the permeability or

hydraulic conductivity of this zone is not available, since

tests on the one well that monitors this zone were not

successful, as previously discussed. The perched water is

contaminated with VOC's, as shown by the analyses of the

water collected from well #10D and previously collected

water samples from backhoe pits near well #11. The levels

of contamination in well #10D are less than those In deeper

well #10A, so It is possible that the contamination in the

perched zone is due to the collection of volatile gases

diffusing from the top of the true water table approximately

7 to 10 feet below.

UNIT 2: Shallow Unconfined Pnreatic Zone

This unit is monitored by wells #1A, #2, #3, #4, #5, #10A

and #11. It is that thickness of the Pottsville Formation

between the top of the water table and a depth of

approximately 45.to 55 feet below ground surface. Since

there are no obvious confining layers overlying this zone,

it can be considered to be unconfined, a belief which is

supported by the range of specific yields obtained from the

pumping test on well #10A. Monitoring wells penetrating

,64. flRIO-%8

r.this zone, in general, had the highest yield of all project

wells. Additionally, piezometer tests show that it has the

highest hydraulic conductivity of any zone investigated.

However, the yields obtained (in addition to the

transmissivity obtained from the well #10 pumping test),

could classify this zone as a semi-confining layer, or

aquitard, rather than an aquifer.

Drill cuttings indicate that unit 2 is rather highly

fractured. However, low well yields and hydraulic

characteristics suggest that the majority of these fractures

are at least partially filled with the mineral material that

was observed to coat fracture faces and thus, limit

groundwater movement.

Thin layers of coal were observed In this unit. Coal often

has a high permeability, due to a high concentration of

cleats and other fractures. However, the coal does not

appear to play an important role in hydraulic conductivity

in this case, perhaps because it is too thin.

UNIT 3: Deep Unconflned Phreatic Zone

Unit 3 is monitored by wells #1B and #10B. It occurs at

depths from approximately 55 feet to approximately 85 feet.

Its average hydraulic conductivity is 2.71 x 10~-6 ft/s.

Yields from wells in this zone were extremely low, and it isRRIOOP69

- 65 -

essentially dry. To call this unit unconfined is perh^s a

misnomer, since its hydraulic conductivity and yield would

classify it as a confining or semi-confining layer.

However, since there apparently is nothing of lower

permeability directly overlying it, it could still be

considered as part of the unconfined phreatic zone,

Portions of this unit appear to be fractured. However,

these fractures do not appear to interconnect, or are filled

in with limonite.

UNIT 4: Confining Layer

This zone occurs from 87 to 95 feet in well #10C and 82 to

86.5 feet in well #1C. This unit could probably be

considered as a portion of unit 3. However, during the

drilling of well #1OC/ an 8 foot thick layer of apparently

unfractured rock beneath low permeability unit 3 was

encountered, leading to the belief that any water bearing

zones occurring at greater depths would be confined. There

are no project wells that specifically monitor this zone.

UNIT 5: Confined Zone

This zone occurs immediately beneath the confining layer of

unit 4. Its thickness is at least 35 feet in well #10C and

24 feet in well #1C. Although the average yield of wells in

this zone are less than that of the shallow zone, theRRIOQ070

- 66 -

hydraulic conductivities of the two units are similar and of

the same order of magnitude. This unit exhibits the same

characteristic fracturing as overlying units, and the same

fracture fillings.

Relative hydraulic characteristics indicate that units 3 and

4 act as at least a semi-confining layer overlying the

confined zone. However, the head in well #100 is lower than

that of wells #10A and #10B, and the head in well #10 is

lower than that of #1A and #1B. This indicates that, even

though unit 5 may be confined or semi-confined, it is

probably not under an artesian head.

HYDRAULIC RELATIONSHIPS BETWEEN INDIVIDUAL UNITS

Data from the pumping test of -well #10A and water quality

data can be combined with vertical head gradients to

interpret the hydraulic inter-relationships between the

units. As stated in the previous section, while conducting

the pumping test on well #10A, a small amount of drawdown

was observed in wells #10B and #10C during this pumping

test. This indicates some degree of hydraulic

interconnection between units 2, 3, 4 and 5. This is not

unexpected, since completely impermeable, laterally

extensive, confining layers are rare in bedrock terrain.

Under natural, non-pumping conditions, a vertical head

gradient exists across units 2 , 3,4 and 5, with the head in.67- A R I 0 0 0 7

unit 2 being the highest and the head in unit 5 being the

lowest. This situation indicates the tendency, and

probability, for groundwater flow in the downward direction.

However, the distribution of VOC's in wells #10A, #10B and

#10C suggest that very little, if any, groundwater flows

from the shallow unconfined zone into deeper zones. This is

probably because the hydraulic conductivity of the shallow

unconfined zone is an order of magnitude greater than that

of the deeper unconfined zone. Since groundwater flow

follows the path of least resistance, it would be expected

that the majority of flow would be in the horizontal

direction. It is probable that the vertical conductivity of

the deeper unconfined zone is even less than its horizontal

conductivity, which is what was measured by the piezometer

tests.

APPLICATION OF PROJECT DATA TO CONTAMINATED

RESIDENTIAL WELLS

Available data on residential wells indicates that they

range from 85 feet to 495 feet in depth, with casing lengths

of 20 to 40 feet. The great majority of these wells are

deeper than the deepest wells drilled for this

investigation. This is not surprising In light of the data

obtained from the upper 100 to 130 feet of the Pottsville

Formation, which indicates it to be a rather poor aquifer.

The Chromatex facility well is 400 feet deep, with 20 feet

f l R I 00072- 68 -

of casing, and yields 34 gallons per minute. According to

the driller, all but a few gpm of this yield was obtained at

depths greater than 350 feet. This well is contaminated

with TCE in the 1.0 to 3.0 ppm range.

This data raises the following question: If the aquifers

from which most of the residential wells, and the Chromatex

production well, withdraw their water are below units 3, 4

and 5, which have been shown to be uncontaminated, then how

did the deeper aquifers become contaminated? The simplest

and most logical explanation to this question concerns the

casing lengths of these wells. These casings, which are

apparently no deeper than 40 feet, would not completely seal

off the highly contaminated shallow unconfined zone.

Therefore, contaminated water flowing through the shallow

zone would be able to leak under the shallow casings into

the wells, thereby contaminating them. Since TCE and

related VOC's are heavier than water, it would be possible

for them to sink to the bottom of the wells, contaminating

the entire water column and probably the deeper aquifers as

well. Since the typical household well pumps for only a

small fraction of each day, it would be possible for VOC

contaminated water entering the wells from the shallow zones

to flow in to deeper zones penetrated by the well, since the

pumping period would probably be too brief to prevent this.

Head gradients in the downward direction would facilitate

this occurrence.RR100073

- 69 -

SUMMARY AND CONCLUSIONS

1) Volatile organic chemical contamination, including high

concentrations of TCE, has been identified in the

groundwater in monitoring wells #2, #10A, #10D and #11.

The concentration gradients of this contamination, com-

bined with calculated groundwater flow directions,

indicates that a major source of the contamination is

in the vicinity of monitoring well #11.

The distribution of groundwater contamination and calcu-

lated flow directions also offer strong evidence that

the VOC contamination that affected the residential

wells did not originate in the vicinity of the under-

ground tank at Chromatex Plant #2.

If the potentlometric surface maps are correct, the

VOC contamination in well #2 could not originate in the

area of well #11, since they are on opposite sides of

the groundwater divide, unless it was able to cross the

divide in the vadose zone.

Another explanation for the existence of contamination

on the south side of the divide is that it is remanent

from a time when the divide was distorted or depressed

by the cone of depression of,the facility well. It is

possible that the pumping of the facility well altered

- 70 -

the configuration of the water table enough to allow

contaminated groundwater in the vicinity of well #11

to cross the divide. When the Chromatex well stopped

pumping and the water table returned to it's ambient

configuration, a slug of contaminated water was left

on the south side of the divide.

2) The vertical distribution of VOC contamination in the

well #10 cluster indicates that it is, limited to the

shallow unconfined phreatic zone, and does not extend

in significant concentration below a depth of 55 feet.

The reason for this is believed to be the low perme-

ability of the deeper unconfined zone, which inhibits

vertical groundwater flow and forces most groundwater

flow to occur in the horizontal direction. However,

vertical head gradients In the well #1 cluster and

well #1O cluster indicate the potential for ground-

water flow from shallow zones to deeper zones.

3} The hydraulic conductivities in the shallow phreatric

zone range from 1.O1 x 10"-4 ft/s to 7.70 x 10~-€ ft/s

However, 9 of 11 hydraulic conductivities obtained for

the shallow zone fall within the 1 x 10"-5 ft/s range,

suggesting relative uniformity across the site. Hy-

draulic conductivity values in the deeper unconfined

zone are in the 1 x 10~-6 ft/s range, and hydraulic

conductivities in the confined zone range from

8.5 X 10"-5 ft/s to 4.4 x 10~-6 ft/s. ^_cRRI00075

4) Calculated groundwater flow directions indicate the

presence of a groundwater divide in the water table

beneath Chromatex Plant #2. The divide trends in an

east-west direction. Groundwater flows off the northern

side of the divide in a northeast direction, and off of

the southern side of the divide in a south or south-

west direction.

5) Velocities of groundwater flow have been calculated

for the shallow phreatic zone, off of each side of

the divide. They range from 36.26 ft/day to 0.16 ft/

day on the northern side of the divide, with an ap-

proximate median of 2.45 ft/day. On the southern

side of the divide, calculated velocities range from

65.00 ft/day to O.03 ft/day, with an approximate

median of 2.90 ft/day. It is most probable that the

extreme values of velocity are not representative of

conditions at the site. A more typical range of

velocities in this type of terrain should be

1.0 to 10.0 ft/day.

To date, the most distant downgradient well in which

VOC contamination has been detected is the Arby's

Restaurant well on Route 93. This well is approxi-

mately 1,560 to 1,660 feet from the most highly con-

taminated well, monitor well #11.• The Arby's well is

72 n R I o n o 7 6

not in the exact direction of calculated groundwater

flow, but is in the general direction. Assuming

groundwater flow in a straight line between the two

wells, which is unlikely, at a velocity of 1.0 ft/day,

it would take approximately 4.27 to 4.55 years for

VOC's reaching the water table at well #11 to reach

the Arby's well. Using a groundwater velocity of

10 ft/day, this time period would have a range of

0.42 years to 0.45 years. The median flow velocity

would produce a range of 1.74 to 1.86 years. The

available data does not allow for the calculation

of an exact velocity, or of a narrow range of velo-

cities.

Since VOC contamination has already reached the Arby's

well, the leading edge of the contaminant plume is now

located at some distance downgradlent from-It. There-

fore, any estimates of the length of time that contami-

nation has been In the groundwater, using the Arby's

well, must be considered as absolute minlmums.

The above calculations assume natural, unimpeded

groundwater flow through the residential neighbor-

hood. It must be kept in mind that, up until Octo-

ber, 1987, at least 22 residential wells, in addi-

tion to the Chromatex Facility well, were in opera*-

tion. These wells, which obviously drew in contamiun tami- — -i( \ R 1 0 0 0 7 7

- 73 -

nated groundwater while pumping, may have impeded

the flow of groundwater through the shallow phreatic

zone. Personnel at Chromatex Plant #2 estimate that

the facility operated at a withdrawal rate of

5,500 gpd. This well, which evidently drew in con-

taminated groundwater while pumping, may have slowed

down the migration of the contaminant plume toward

the residential wells by pulling it in another di-

rection while it was pumping.

The nature of flow of VOC's in groundwater must be

considered when calculating their travel time

through an aquifer. TOE and related compounds are

denser than water and can display differing flow

characteristics, and it is possible that it could

take longer for TCE to flow through the aquifer

than uncontaminated water.

6) An apparent perched water table is located in the

vicinity of the well #1O cluster and well #11.

This water table has been investigated in a very

preliminary fashion, and found to be contaminated

with VOC's,

- 74 -

REFERENCES

Fetter, C. W., 1988, Applied Hydrogeology; MerriliPublishing : Columbus, Ohio.

Freeze and Cherry, 1979, Groundwater; Prentice-Hall:Englewood Cliffs, N.J.

Hvorslev, 1951, Time Lag and Soil Permeability in Ground-water Observations; U.S. Army Corps of EngineersWaterways Exp. Sta., Bull. 36, Vicksburg, Miss.

INTEX, 1988, Work Plan for Phase 1 of Extent of Contami-nation Study at Chromatex Plant #2, West Hazleton,Pa.

Lohman, 1937, Groundwater in Northeastern Pennsylvania;Pa. Geologic And Topographic Survey Bulletin W4.

Schafer, 1978, Casing Storage Can Affect Pumping TestData; Johnsons Drillers Journal, Jan/Feb., JohnsonSivision, UOP, Inc.

Walton, 1970, Groundwater Resources Evaluation; McGraw-Hill, N.Y.

Walton, 1985, Practical Aspects of Groundwater ModellingNWWA.

A R I O O H 7 9

CHROMATEX PLAKT NO. 2WEST HAZLETON, PA.

EXTENT OF GROUNDWATERCONTAMINATION STUDY, PHASE

APPENDICES

p t

wtfLA&xt

Rp>yvmVwft*fe?r£&&l$g*

tfraflM?

f«* w^vK* "'Vlewwtt&A nffl

WELL CONSTRUCTION SUMMARYPROJECT: cnromatex

'WELLDEPTH(f t )

Well Cross Section

- 16

16 - 22

?3 - 25'

25 - 33'

33 -35*

35*-

GEOLOGY

Yellow brown, mediumsandy s i l t , somechunks of coarse sand-stone, damp.

Brown-yellow mcd. sandchunks of dark grayarkose, very weathereddry.

Brown coarse sand,rounded, and sandstonesome s i l t , fractured.Damp. (Bedrock).

Soft spot at I6i to17 ' . Brown, fine tocoarse sand, somes i l t , chunks of veryfine black sandstone,trace Umontte, dry.Towards 20* some con-glomerit ic, coarsesandstone (quartz &amphibole - ?)

Coarse quartz-amphi-bole sandstone, trace1imoni te, fractured,wet. Dry spot at 23'

Red coarse arkose,few dark minerals,clean quartz gravelfrom conglomerateabove, t race 1imonItedry. At 30' arkosicconstituents -arerarer.

Dark, cbarse, quartz-amphibole sandstone,conglomerittc inplaces, predominantlyamphiIbole, fracturedtrace pyri te, dry.

Conglomerit ic arkose,reddish brown stain,

l i t t l e pyri te, damp.

Grout Apro,v

rGroundSurface

CementGrout

fej

Bentoni teSeal

^'SolidSteelCasing

Open hole tototal depth.

VERTICAL SCALE

0 . 3P

1 in. = 10 ft.

Construction Details

Location: Continental White Capproperty.

Driller: KohlDate Started: 3/29/88Date Completed: 3/30/88

Driller's file name: jeff G i l l

Yield: 3-8How Determined: Purging well wi t t

air for timed interval, then count-ing buckets needed to bail mud tub

Total Well Depth: 50' dry

Static Water Level: 21.57'Date: V19/88

b . t . «

Casings:Diameter Depth6" SteelSt ick-up

22'1 W

Grouting Details: 5* bentonite,35% Type I Cement to surface, w i t hli1 bentonite pel lets at bottom ofcasing.

Water Bearing Zones:

Depths

22'35*'

Yield

<.5 gpm1 gpm

3 - k gpm

NOTE: Lithologic contact depthsare approximate, as cutt ingscame up with di f f icul ty.

Water Quality:

Data provided by

IKTIKNATIONAL

577 Sackettsford RWamtinster, PA

18974-139

WELL CONSTRUCTION SUMMARY WELL: IA

PROJECT: Chromatex

'WELLDEPTH(ft)

Well Cross Section

- 50'

GEOLOGY

Coal, trace pyrite,soft and fractured,wet.

Black shale, fractured"sprinkled" with py-rite, wet.

Quartz-amphilbole con-g1omerate, occasion-ally arkoslc, occa-sional encrustation ofpyrite, wet.

Black medium grainedsandstone with minorquartz constituent,minor pyrite encrusta-tion, wet, fractured.

END OF DRILLING: 50'

Developed for 37 minutesby air l i f t .

Construction Details

Location:

Driller:Date Started:Date Completed:

Driller's file name

Yield:How Determined:

Total Well Depth:

Static Water Level:Date:

Casings:Diameter Depth

Grouting Details:

Water Bearing Zones:

Depths Yield

Water Quality:

Data provided by:

Date: 0083

INTONATION A L

577 Sackettsford RWarminster, PA

18974-139

;ELL CONSTRUCTION WELL: IB'PROJECT; C

'WELLDEPTH(ft)

0 - 10'

Well Cross Section

10-1V

15-13'

19-22'

22-25'

1*2-50'

GEOLOGY

Yellow brown silty sand 1some chunks of dark ar-kose, dry. Sandstonechunks become bigger £harder at 6i'.

Bedrock. Medium quartz-amphibole sandstone,t race a rkose, t racemica, dry. Weathered.

Black medium sandstone,conglomeritic in placesvery weathered (cuttingappear as sand). Dry.

Black coarse sandstone,trace mica, trace ar-kose, dry.

Gray sandstone, cuttingappear as sand.

Coarse quartz-amphibolisandstone , trace 1imo-nite staining, tracearkose, no apparentfracturing, dry.

Like above, with quartdthat may be a fracturefi l l i n g and a trace ofsoft purplish si It-stone.

Black medium sandstoneconglomeritic in placesome limonite staininglittle black £. purpl issiltstone, damp. Tracepyrite at 32'.

Coal, anthracite.

Black, hard shale,litt l e coarse conglom-erate, little pyrite,trace free quartz,trace anthracite andhematite, wet.

Grout

6"SolldSteel- Cas i ng

Cemen tGrout

Bentonite^ Seal

Open hole tototal depth.

VERTICAL SCALE

0 10h————————j

1 in. = 10 ft.

Construction Details

Location: Continental W h i t e Capproperty, by Jaycee B l v d .

Driller: KohlDate Started: 3/3V88Date Completed: */8 /88

Driller's file name:Jeff G i l l

Yield: < 1 gpmHow Determined: Est imate

Total Well Depth: 80*'

Static Water Level: 30i 'b. t .cDate: 4/19/88

Casings:Diameter____Depth___

i ek-up

Grouting Details: Bentoni te p e l lat bottom of a n n u i u s , fol lowed by a5% bentonite/95t cement m i x t u r e tob.g.s . A 1:2 sand/cement mix fromWater Bearing Zones: ground t

surface.Depths Yield

Hi'261 •1*2'

moist zonemoist zone< -5 gpm

Water Quality:

Data provided by:

Date:

1WTIRNAT10NAL

577 Sackettsford FWarminster, PA

18974-13^

WELL CONSTRUCTION SUMMARY WELL: IBPROJECT: Chromatex

WELLDEPTH(ft)

50-55'

Well Cross Section

55-57'

:>7-62i'

GEOLOGY

Black, fine sandstone,trace pyrite £ quartz,trace 1imonite (dscrust), fractured, soft

Medium sandstone, littlblack shale, trace veryhematic sandstone,fractured, wet. Dry at57'.

Medium quartz-amphibolesandstone, trace mica,dry.

62i-69i' Dark gray medium sand-stone, fractured, tracepyrite £ Mroonlte, dry.Iron minerals disappearat 65±'-

Trace anthracite.

Medium quartz-amphibolesandstone, trace mica,dry.

Some iron mineral en-crustations, possiblyfractured.

73'

END OF DRILLING: 80i

Developed intermittently for30 minutes by water injectionand air lift. Unmeasureablylow yield.

Construction Details

Location:

Driller:Date Started:Date Completed:

Driller's file name:

Yield:How Determined:

Total Well Depth:

Static Water Level:Date:

Casings:Diajneter Depth'6" Steel

Stick-up55'

1 .62'

Grouting Details:

Water Bearing Zones:

Depths Yield

Water Quality:

Data provided by:

INTT«NATK>NAL

577 Sackettsford 3W&rminster, PA

18974-13'

WELL CONSTRUCTION SUMMARY W E L L :PROJECT: Chromatex

'WELLDEPTH(ft)

0 - 3'

3'

3 - .15'

Well Cross SectionGEOLOGY

Yellow-brown sand andsi l t , few chunks ofarkose, dry.Bedrock.

Gray medium sandstone,Ii ttle mica, some arfkose, silt 6 sand,weathered, dry.

15 - 22' Coarse quartz-amphibolesandstone, dry. Veryweathered. Hemati testaining at 20' .

22 - 27' Black shale, trace pur-plish mudstone, tracelimonite as an encrustation, trace hematite,dry.

27 -4li' Medium quartz-amphibolesandstone, trace limo-nite, very weathered,dry.

Anthracite & blackshale, fractured, tracelimonite, dry.

- **9' Black shale, trace py-rite, trace hematite,damp.

- 60' Black very fine sand-stone, trace quartzconglomerate, frac-tured, trace iron min-erals, damp. Wet at 51

60 - 66' Medium quartz amphiboltsandstone, little limo-nite, trace mica, wet.

66 - 70' Black fine sandstone,some anthracite, tracepyrite £ limonite, wet

70 - 82' Quartz-amphibole sand-stone, trace 1 imoni te ,fractured, wet. Very

J _ A. Qt i

Grout.Apron Locking Cap

\\

GroundSurface

SolidSteelCasing

Cement"Grout

BentoniteSeal

Open hole tototal depth

VERTICALSCALE

0 10 20

i in. = 10 ft.

A R I 0 n n

Construction Details

Location: Continental White Cap,by Jaycee Blvd.

Driller:KohlDate Started: 4/12/88Date Completed: 4/1*1/88

Driller's file name:jeff G i l l

Yield: i .3How Determined rnming developmei

then measuring purged water.

Total Well Depth: no1

Static Water Level :3o.39 'b .t.cDate: A/19/88

Casings:Diameter Deptfr'V SteelStick-uo

86V2.19 '

Grouting Details: Bentonite pelt bottom of annulus, followed by a% bentonite/95$ cement mixture to-g.s. A 1:2 sand/cement mix toround surface.ATER BEARING ZONES:

Depths Yield

damp< 1 gpm< 1 gpm1 .3 gpm

51'87'

100'

Water Quality:

Data provided by:

IWTKRNATIONAL

577 SackettsfordWarnunster, PA

18974-1

Date

WELL CONSTRUCTION SUMMARY WELL:PROJECT: Chromatex

'WELLDEPTH(ft) GEOLOGY

82 -86i

864- 92'

92 -96*'

•$64-110'

Same lithology as abovebut no evidence offractures £ almost notrace of iron minerals.

Black shale, trace limonite, fractured, moist.

Black fine sandstone,wet.

Medium to coarse sand-stone (quartz-amphibole)trace Umonite, frac-tured, wet. Some frac-ture faces lined withquartz.

END OF DRILLING: 130'

Developed for 31 minutesby air 1ift.

Well Cross Section

R R I O O D 8 7

Construction Details

Location:

Driller:Date Started:Date Completed:

Driller's file name;

Yield:How Determined:

Total Well Depth:

Static Water Level:Date:

Casings:Diameter Depth"

Grouting Details:

Depths Yield

Water Quality:

Data provided by:

INTERNATIONAL EXPUOIW577 Sackettsf ordWarrainster, PA

18974-11

Date:

WELL CONSTRUCTION WELL; 2PROJECT: Chromatex

'WELLDEPTH(f t)

0 - 1 '

1 - 5-'

Well Cross Section

5 - 7'

- 15'

15 -20*'

- 25'

- 30'

3 0 - 3 3 '

3 3 - 3 7 '

37 -

GEOLOGY

Yellow brown sandy siltTopsol1.

Bedrock. Dark coarsearkose, some si It,hard,dry. Some 1imonitestaining.

Dark gray medium sand-stone , conglomeri tic inplaces, 1imonite-1inedfracture faces, dry.

Medium grained, quartz-amphibole sandstone,conglomeritic and lim-oni tic In places ,fractured, dry.

Soft, dark gray shalefew chunks of sand-stone, damp. Soft to20±'.

Black, fine sandstone,hard, some hematicstaining, dry.

Light gray, mediumsandstone, trace darkparticles £ trace sandstone conglomerate,1imonite staining,weathered, dry.

Black, fine sandstoneor shaly sandstone,fractured, 1imonitestalning , hemati testaining, dry.'

Medium grained quartz-amphibole sandstoneconglomerate, weathere.dry.

Dark gray medium sand-stone, fractured, limonite staining, dry.

GroutApron

CementGrout

Ben ton i teSeal

Open hole tototal depth.

VERTICAL SCALE0 10t_________i

1 in. = 10 ft.

f l R I O n n

Construction Details

Location: A11 steel property,closest to Jaycee B l v d .

Driller: KohlDate Started: 3/29/88Date Completed: 3/30/88

Driller's file name:Jeff G i l l

Yield: 2.33 gpmHow Determined: Purging well witi

air for timed interval, then couning buckets needed to ball mud tui

Total Well Depth: 55i' dr

Static WaterDate: 4/19/88

Casings:Diameter

Level: 9.51'b.t.c.

Depth6" SteelStick-uo

IS1

1.9V

Grouting Details: Approx. 1i' betonite pellets at bottom of annulusfollowed by 5%_bentonite/95* cementto 2'b.g.s. 1:2 ratio sand/cementfrom 2' to ground surface.WATER BEARING ZONES:

Depths Yield

1*7* 2 gpm

Water Quality:

Data provided by:

IWTTHNATIONAL

577 Sackettsford FWarminster, PA

18974-13S

Date:

'WELLDEPTH(ft)

- 50'

WELL CONSTRUCTION SUMMARY

Well Cross SectionGEOLOGY

50'

-55i

Medium quartz-amphibolconglomerate, arkosic,fractured, dry. Waterat 47 ' .

Quartz vein. Few chunkare stained with iron-oxides. Rarely a palegreen encrustation.

Black, fine to mediumsandstone, fractured,limonite staining,wet.

END OF DRILLING: 55*'

Developed for k3 minutesb y a i r l i f t .

LL:PROJECT: Chromatex

Construction Details

Location:

Driller:Date Started.:Date Completed:

Driller's file name:

Yield:How Determined:

Total Well Depth:

Static Water Level:Date:

Casings:Diameter Depth'

Grouting Details:

Water Bearing Zones:

Depths Yield

Water Quality:

Data provided by:

IWTMNATIONAL

577 Sackettsf ord IWarminster, PA

18974-13'

Date

WELL CONSTRUCTION SUMPROJECT: Chromatex

'WELLDEPTH(f t )

Well Cross Section

V

13'

13 -

16 -

18'-

16'

.18'

1 8 - 2 2

22 - 25

25-27'

27 - 30'

30-^7'

GEOLOGY

Brown si l t and rockfragments.

Bedrock. Dark graysandstone, very weath-ered In places. Dampat 6i'.

Calcite (?) Vein. Darkcoarse sandstone. Damp

Quartz-amphibole. sand-stone, hard.

Cuttings appear as1 ight and dark finesand. Weathered. Nowater.

Dark gray medium sand-stone, soft, slightevidence of fracturingtrace i ron-stainedlight mineral (possiblyplagioclase). Dry.

Med i urn, quartz-amphi-bole sandstone, somelimonite staining,fractured, dry.

Quartz-amphibole con-glomerate , trace 1imo-nite stain and parti-cles, dry.

Medium grained arkose,many clear quartzcrystals (fracture1 ining) fractured, 1 imonite stained, wet,

Medium, quartz-amphi-bole sandstone, oc-casionally conglomeritic, some s i l t , somelimonite staining,fractured, wet.

END OF DRILLING:

fnr

Grout^Aproj!^f

GroundSurface

CementGrout

BentonIteSeal

Open hole tototal depth.

VERTICAL SCALE

1 in. - 10 ft.

A R I 0 0 0 9 0

Construction Details

Location: Al l s tee l property, aloproperty's border w/Chromate

Driller: KohlDate Started: V8/88Date Completed: k/\ 1/88

Driller's file name:Jeff G i l l

Yield: 1 gpmHow Determined: T i m i n g w e l l deveopment, then measuring collecteddevelopemnt water.

Total Well Depth: 47'

Static Water LevelDate: V19/88

19.87'b.t .c

Casings:D i ame ter____Depth'

6" SteelStick-up

18'

Grouting Details: Bentoni te p e l lat bottom of annul us. followed by5? bentonite/95% cement mixture tcb.g.s. A 1:2 sand/cement mix fo ;

Water Bearing Zones: grours u r f f

Depths Yield

27'35*'

< 1 gpm1 9Pm

Water Quality:

Data provided by

577 SackettsfordWarminster, PA

18974-1

Date:

WELL CONSTRUCTION WELL:*PROJECT: Chromatex

'WELLDEPTH(ft)

0 - 7 '

7 - 10'

10 -lOi

- 16

Well Cross Section

1 6 - 2 0

20'-

2 0 -

2 5 -

25

35

35 -

4H- 43'

A3 - 45'

4 5 - 5 5 '

GEOLOGY

Yellow brown sandy sflChunks of arkose beginto appear at 6'.

Bedrock. Medium grainearkose, weathered Inplaces, dry.

Medium sandstone,weathered. Cuttingsappear as sand, dry.

Dark gray to blackmedium sandstone, noapparent fractures,trace Umontte stain

Medium to coarse sand-stone and arkose. Dry

Quartz Vein.

Sandstone and arkose.Dry. Fractured.

Black-, medium sand-stone, fractured,little limonltestaining, dry.

Medium quartz-amphi-bole sandstone, some1imoni te staining,fractured, moist.Dry at 37* .

Arkose, some ironminerals as staining,fractured, dry.

Black, medium sand-stone, damp.

Quartz-amphibole sandstone, fractured,trace hematite, damp.Wet at 49' .

END OF DRILLING: 55'DEveloped for 32 minutesby air 1i ft.

Grout Apron

GroundSurface

CementGrout

Jen ton i teSeal

LockingJ CapT»ifJ«JA __

6"SolidSteel"Casing

Open hole tototal depth.

VERTICAL SCALE

0 10i ___ i

1 in. = 10 ft.

A R I 0 0 0 9

Construction Details

Location: In the woods behind thsoutheastern side of Chromatex.

Driller: KohlDate Started: 4/6/88Date Completed: 4/13/88

Driller's file name:jeff ^\\\

Yield: 3.75 gpmHow DeterminedTIming developmer

then measuring amount of waterpurged.

Total Well Depth: 55'

Static Water Level: 15.3'b .t.c.Date: 4/19/88

Casings:Diameter Depth' _ _6" SteelStick-up

IS}'1.8'

Grouting Details:Bentonite pellat bottom of annul us, followed by a5? bentonite/95t cement mixture toj.g.s. A 1:2 sand/cement mix to groWater Bearing Zones: surf

Depths

34434953

Yield

dampdamp1 gpm3 gpm

Water Quality:

Data provided by;

577 SackettsfordWarminster, PA

18974-1

Date

WELL CONSTRUCTION SUMMARY WELL: 5PROJECT: Chromatex

'WELLDEPTH( f t )

0 - 5'

Well Cross Section

5 -74'

74-n1

n-351

35-45'

GEOLOGY

Brown £ yellow-brownsi l t , some sand, tracearkose chunks. Gray sandstone chunks appear at5 ' .

Bedrock. Black, mediumsandstone, trace con-glomerate, trace pyrite,trace muscovite, dry.

Very weathered. Cuttingsappear as sand.

Dark gray, medium sand-stone, trace conglomer-ate, trace Umonitestaining, trace arkose,fractured, dry.Moist at 25*'.

Cutt ings appear as sandVery weathered. Wet,but no yield.

GroutAprons

END OF DRILLING: 45'

DEveloped for 30 minutesby air lift.

GrounaSurface

CementGrout

Bentoni teSeal

Locking Cap

6"SolidSteelCasing

Open hole tototal depth.

VERTICAL SCALE

10

1 in. = 10 ft

A R I Q O n g ?

Construction Details

Locatiomln the woods just southof Bent P i n e Road.

Driller: KohlDate Started: 4/6/88Date Completed: 4/7/88

Driller's file name:Jef f G i l l

Yield: 1 .1 gpmHow Determined-Timing develment ,

then measuring amount of waterpurged.

Total Well Depth: 45'

Static Water Level: 11 .0 'b . t . c .Date: 4/19/88

Casings:Diameter Depth'

6" SteelStick-up

1£'2 .17'

Grouting Detailsfientonite pelleat bottom of annul us, followed by a5% bentonite/95$ cement mixture toj.g.s. A 1:2 sand/cement mix to grotWater Bearing Zones: surf<-

Depths

25*35'

Yield

< 1 gpm1 gpm

Water Quality:

Data provided by:

iNTTKNATIOMAL

577 Sackettsford :Warminster, PA

18974-13

Date:

WELL CONSTRUCTION' SUMMARY WELL: IDAPROJECT: Chromatex

'WELLDEPTH(ft)

0 -Hi

Well Cross Section

Hi- 15'

15 - IS-

- 30

30 - 35

1*0 -

- 5Q

GEOLOGY

Yellow-brown sandy s i l tdry. (Topsoi1) Sand-stone fragments beginto appear at 5'.

Bedrock. Quartz-amphi-bole sandstone, arkosicmoist. More weatheredat 15'.

Cuttings appear as med-ium sand. Highlyweathered sandstone, dp)

Coarse, quartz-amphi-bole sandstone, veryweathered, d ry, t racearkose & iron oxidestaining. Particle sizeis fine to medium at25-30'. Fractured.

Grout*H I uly

Locking/ Cap

Fine black sandstone,trace arkose, gradingto siItstone at 33' •Soft 6 damp.

Black to dark gray med-ium sandstone, soft, noapparent fractures.Noticeably wetter at 37

Medium quartz-amphibolesandstone, highlyfractured, little py-rite, wet.

Fine black sandstone orsiltstone, very soft.

CementGrout

Seal

t_

s

L.• *

#*

*:t^*m i•^

|v«

iite

J rjr>

.•i

yjV5.

*f!^»

4'

1

GroSur

6"

41*TIa s n g

Open hole tototal depth.

END OF DRILLING: 50'

Developed for 20 minutesby air 1ift.

VERTICAL SCALE

0 10i______mir_m__|

1 in. = 10 ft.

f l R I 0 0 0 9 3

Construction Details

Location:Northeast side of Chrom*tex property at edge of parking lotDriller: KohlDate Started: 3/1*1/88Date Completed: 3/17/88

Driller's file name: jeff G i l l

Yield: 2 - 3 gpmHow Determined:Estimated during

developing.

Total Well Depth: so-

Static Water Level: 19.19'b . t.c.Date: VI9/88

Casings:Diameter

6" st»»iStick- up

17' b.g.s.1 .28* abovegrout apron

Grouting DetailsSenonite pelletat the bottom of annulus, followed5% bentonite/95t cement mix to 21

b.g.s. 1:2 ratio.med. sand & cementfrom 2' to ground surface.WATER BEARING ZONES:

Depths Yield

11430'37'1*0'

1 gpm

1 gpm2-3 gpm

Water Quality:

Data provided by:

577 Sackettsford !Vfeirminster, PA

18974-13!

Date

WELL CONSTRUCTION' SUMMARY '*«*WELL: 10BPROJECT: Chroma tex

'WELLDEPTHCft )

0 - Si1

5*'- 81'

8* - 12'

2 - 15'

15 - 20'

20 - 28'

28 - 35'

35 -

- 55'

GEOLOGY

Yellow-brown sandy sil(Topsoil) , dry.

As above, with fewsmall chunks of coarsesandstone.

Brown medium to coarsesand and silt, somechunks of sandstone,dry. Moist at 11 '.

Bedrock. Medium grain-ed quartz-amphibolesandstone, trace ar-kose, very weathered,moist.

8"SolidBlack medium sandstone! Steeltrace quartz and pyritle. CasingFRactured, wet. Coarse)at 201.

Medium to coarsequartz-amphibole sand-stone , cong1ome r i t i c,trace free quartz,pyrite £• arkose, dry.

Black medium to veryfine sandstone, frac-tured, trace quartz &pyrlte, damp, lessfractured at 32' .

Quartz-amphibole con-glomerate , fractured,wet. At 36' traces ofarkose, quartz.& py-rite appear.

Black shale, tracepyrite & quartz, wet.

Black, fine to veryf ine sandstone,1 itt le black shale,trace anthracite £pyr i te, wet. FRac-tured & possiblyfaul ted.

Well Cross Section

VERTICAL SCALE

0 10 20

1 in. * 10 ft.

Grout Apron4

GroundJSurface

BentoniteSeal

6" SolidSteel ———

Casing

Bentoni teSeal~

CementGrout

^Cement'* G rou t

Open hole to

Construction Details

Location: Northeast side of Chrometex property at edge of parking lot.Driller: KohlDate Started: 3/21/88Date Completed: 3/28/88

Driller's file name:Jeff Gill

Yield: <1 gpmHow Determined: Es t imate

Total Well Depth: 82'

Static Water Level: 24 .09 'b . t . cDate: 4/19/88

Casings:Diameter Depth'8" Steel6" SteelS t i ck- up

20'S7'1.67'

Grouting Details: Bentonite pelat bottom of annulus, followed by a5% bentonite/95% cement mixture tob.g.s. A 1:2 sand/cement nix toground surface.

Depths

IT16'28'35'50'691'

Water Quality:

Data provided by:

Yield

moist* 1 gpmdamp

1 gpm2 gpm

moist

IKTTHNATIONAL577 Sackettsford 1Warminster, PA

18974-13'

Date

'WELLDEPTH(ft)

55 -574

WELL CONSTRUCTION SUMMARY

Well Cross Section

PROJECT: Ch roma tex

Construction DetailsGEOLOGY

574- 63'

63 -694'

691- 73'

73 - 77'

Gray medium sandstone,few chunks of pyrite £limonite, wet.

Dark gray fine sandstoneno evidence of fracturesdry.

Medium to coarse quartzamphibole sandsto/ie,conglorneri tic, hard, noapparent fractures. Dry

Black shale, soft, someanthracite fragments,trace pyrite, fracturedMoist, coal dust at 73'

Black fine sandstone £shale, unfractured,hard, wet, no yield.

82' Black fine sandstone,as above. Wet, no yield

END OF DRILLING: 82'

Developed when water ac-cumulated intermittentlyfor *»5 minutes by air lift.

A R I O O P 9 5

Location:

Driller:Date Started:Date Completed:

Driller's file name

Yield:How Determined:

Total Well Depth:

Static Water LevelDate:

Casings:Diameter Depth'

Grouting Details:

Water Bearing Zones:

Depths Yield

Water Quality:

Data provided by:

iNTEftNATlOMAL E

577 Sackettsford fWarminster, PA

18974-139

Date

CONSTRUCT!' SUMMARY W E L L : 1 0 CPROJECT :Chromatex

'WELLDEPTH(f t )

0 - 7'

7 - 9'

9 - 15'

1 5 - 2 1 *

Well Cross Section

2k - 35'

35 -

2 - 55'

55 - 6V

61 - 69

69 - 76'

GEOLOGY

Yellow brown clayeys i l t , 1i ttle coarsesand (topsoil), damp.

Sandy s i l t with smallchunks of sandstone £arkosic sandstone. Dry

Bedrock. Quartz-amphi-bole sandstone, wet at10'. Arkosic in placesWeathered at 14'..

Medium to coarse quartzamphibole sandstone,very weathered, wet at171 .

Black medium sandstonehard, fractured, tracepyrite £ free quartz,wet.

Gray medium grainedsandstone, trace pyritevery weathered, dry.

Fine to coarse quartz-amphibple sandstone,(mostly amphibole) ,trace pyrite, someshale, trace anthra-cite £ mica, dry.

Black very fine sand-stone, some grains ofiron-oxide in thestone. Wet at 58' .

Medium to coarsequartz-amphibole sand-stone, trace pyrite £free quartz, fracturedwet .

Very fine to fineblack sandstone,1i ttle pyrite & quartzWet.

GroutAp ron "^

GroundSurface

8" SolidSteel ~-Casing

6" Soli dSteel -_Casing

CementGrout

iBentoni te*

SealOpen hole tototal depth.

Lockingf Cap

%*;• *-*.•/':

2 i«l

CementGrout

SBentoni teSeal

VERTICAL SCALE

0 \0 20

in. = 10 ft.

Construction Details

Location:Northeast side of

Chromatex property atDriller: edge of Park 'n9 ]ot.Date Started: yjJ/88Date Completed:

Driller's file name: Jeff G i l l

Yield: HHow Determined: Estimated

during developing.

Total Well Depth:130'

Static Water Level: 25.49'b. t.cDate: 4/19/88

Casings:Diameter Depth8" Steel6" SteelStlck-un

27V87'1.92'

Grouting Details:^' bentonitepellets at bottom of annulus, undea 5% bentonite/95% cement mixture4 ' b . g . s . A 1:2 sand/cement mix frcVb.g.s. to ground surface.WATER BEARING ZONES:

Depths Yield

10175865106

approx. 5moist<1 gpm

1 gpm2 gpm

gpm

Water Quality:

Data provided by:

INTTHNAT10NAL

577 Sackettsf ordWarniinster, PA

18974-1:

Date:

WELL CONSTRUCTION SUMMARYPROJECT* Chromatex

WELLDEPTH(ft)

76 - 87'

Well Cross Section

87 -125'

GEOLOGY

Medium grained quartz-amphibole sandstone,hard, not fractured,wet

Black, medium sandstone,some quartz grains, dry,No evidence of fracturestrace mica. At 95'weathered zones appear.Wet at J06' .

125-130' Black very fine sand-stone, soft, fractured,some free quartz, wet.

END OF DRILLING: 130'

Developed for 32 minutesby air lift.

I 0 0 0 9 7

Construction Details

Location:

Driller:Date Started:Date Completed:

Driller's file name:

Yield:How Determined:

Total Well Depth:

Static Water Level:Date:

Casings:Diameter Depth'

Grouting Details:

Water Bearing Zones:

Depths Yield

Water Quality:

Data provided by:

IMTMNATIONAL

577 Sackettsf ordWarminster, PA

18974-1:

Date:

'WELLDEPTH(ft)

0 -.5'

.5 - I1

1 - 2

2 - 8.51

8.5 - 11

11 - 15

WELL CONSTRUCTION SUMMARY

Well Cross SectionGEOLOGY

Brown silt, trace sanddry.

Light brown sandy s i l tdamp.

Gray brown-mottledblack silt, peaty,damp.

Yellow brown sandys i l t , smal 1 , scarcechunks of quartz-amphibole sandstone, damp.

Gray brown medium sandscarce chunks ofquartz-amphibole sand-stone, damp.

Bedrock. Very weathere

Reddish brown arkose,dry. High amphibolecontent. Wet at 13* .

END OF DRILLING: 15'

Unable to developdue to low yield.

GroutAp ron.

Lock i ng

groundSurface

iento-nite -^Seal R iij|*2-slotted

SteelGravel ~| Casing

CementGrout

V SolidSteelCasing

'-CEsee^

TeflonPlug

VERTICAL SCALE0 10t_________j1 in. = 10 ft.

WELL:#10DPROJECT: Chromatex Plar

#2, West Hazleton, PA

Construction Details

Location: |n well cluster on peri-meter of parking lot.

Driller: KohlDate Started: 4/15/88Date Completed: A/15/88

Driller's file name:jeff G i l l

Yield: UndeterminedHow Determined:

Total Well Depth: 15-

Static Water Level: 11.73 b.gDate: ii/19/88

Casings:Diameter Depth*»•' fir**l

Perforatedic; ' h g T

13-15' btq.s.

Grouting DetailsiQravel pack frt15 to II1, bentoni te pel lets fromto 34'-,sand £ cement (2:1) concrettfrom 9i' to ground surface.

Water Bearing Zones:

Depths

13'

Yield

< 1 gpm(wet cutti ngs)

Water Quality:

Data provided by:

1NTTBNAT10NAL

577 Sackettsf ord :Warminster, PA

18974-13

Date:

wELL CONSTRUCTION SUMMARY WELL: 1 1PROJECT: Chromatex

'WELLDEPTH(ft)

0 - V

4 - 7'

7 - 11

Well Cross Section

n -

174-

174'.

20'

5 0 -

GEOLOGY

Gravel ballast, littleyellow-brown sandy s i l t

Bedrock. Medium sand-"stone, hard, fractured,dry.

Very weathered sand-stone (cuttings appearas mealy sand). Dry.

Light gray sandstone,very weathered, dry.

Brown medium to fine,silty sandstone, veryweathered, possibly adecaying quartz vein.Cuttings appear as sandand silt. Dry.

Black medium sandstone,weak, soft. Dry, butdamp at 27' .

Medium quartz-amph I bolesandstone, trace arkosevery weathered, damp.

Black shale, coal dust,trace anthracite. Damp.

Black medium sandstone,damp.

Dark gray medium sand-stone, soft, little py-ri te 6 free quartz,fractured, damp. .Wet at52'.

END OF DRILLING: 55'

Developed for 36 minuteswith air lift.

20 - 32'

32 -

50'

55'

GroutApron\

Locking Cap

CementGrout

Seal

«

tHill ••

•I*

«.*/.*v.

w. *yf

HI te

1

c>wi.. ,

f*

ft

I

T "~ * " It "

GroiSur

6" <"Si

Ca<Steel

Open hole tototal depth.

VERTICALSCALE

0 10

1 in. = 10 ft.

RR I 0 0 0 9 9

Construction Details

Location: Southeast s ide of Chrortex property, approx. 10* out fr

Driller: Kohl wsDate Started; 3/18/88Date Completed: 3/22/88

Driller's file name: Jeff Gil

Yield: approx. 2 gpmHow Determined: Est imated d u r i r

developing.

Total Well Depth:55*

Static Water Level: 9-75'b. t-c.Date: VI9/88

Casings:Diameter Depth'

6" SteelStick-tin

20'1.8'

Grouting Details: U1 bentoniteellets at bottom of annul us, folio*y a 5% bentonite/95% cement mixturo 2'b.g.s. 1:1 ratio of sand/cemenrom 2* to ground surface.

/ATER REARING ZONES:Depths Yield

17'

32'52'

SI ightly damp,no apparent waterDamp2 gpm

Water Quality:

Data provided by:

lKTMNAT>ONAL

577 SackettsfordWarminster, PA

18974-1.

Date:

APPENDIX I

loo

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX'514 • SOUTHAMPTON, PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID :Sample ID :Analysis Date:

CAS NO.

615436CHROMATEX WELL ttlA4/22/88

COMPOUND

Client:Matrix:Lab File:

INTEXWATER615436V

RESULTS(UG/L)COMME

74-87-3-74-83-9-75-01-4-•7 C n A Q/ O-UU— J—75-09-2-75-35-4-75-34-3-540-59-0C "7 CC OD f-OO-O-107-06-271-55-6-56-23-5-75-27-4-•7 Q O1? C/ o-o * -o-10061-0170 ni -fi-( O U X O

124-48-179-00-5-71-43-2-10061-0275-25-2-127-18-47Q_Qi K1 ;y~ J*± a

Ino ft o QUt)-t5o 3108-90-7100-41-4

------Chloromethane 10 [I- — ---Bromo methane————— Vinvl Chloride___ — -Chloroethane------Methylene Chloride------1 . 1-Dichloroethene- — ---1 . 1-Dichloroethane------1 . 2-Dichloroethene ( total )

f~*ln T in •• r -f - i • ivi------L,niorororm_. ...._-____! . 2-Dichloroethane- — ---1 . 1 . 1-Trichloroethane------Carbon Tetrachloride------Bromodichlororoe thane______! r 2-Dichloropropane-5----cis-l . 3-Dichloroprooene------Trichloroethene------Dibromochloromethane------1 . 1 . 2-Trichloroethane------Benzene-6----trans-l r 3-Dichloropropene__ —— -Bromo form---- — Tetrachloroethene------1 P 1 r 2 r 2-Tetrachloroethane

--- — -Chlorobenzene------Ethyl benzene

SDRROGATE RECOVERY DATAD4-1 . 2-DichloroethaneD8-TolueneBromo flurobenzene

10 D10 D10 D5 U5 05 tl5 D5 U5 U5 D5 05 U5 _ 05 05 U5 . U5 U5 U5 D5 _U5 05 05 _0_5 D5 U

% RECOVERY9010893

COMMENT0= Not DetectedJ= Detected But Below Method Detection LimitB= Compound in Blank

Signature

Howard WhaleyGC/MS Project Manager

to I

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID : 615437Sample ID : CHROMATEX WELL tflA FBAnalysis.Date: 4/22/88

Client: INTEXMatrix: WATERLab File: 615437V

CAS NO. COMPOUNDRESULTS(UG/L)

74-87-3—74-83-9—75-01-4--*7 c r\ r» oI D-UU-O— -75-09-2--7 R — *^R — 4.--1 O « 3 3 * i•7 K Q A *3f 3-O4-O--540-59-0-C"7 CC QO f DO 3 —

71 c: c o1-55-6--56-23-5--75-27-4--78-87-5 —10061-01-79-01-6—124-48-1-79-00-5--71 _4^_9__J J. r* J £.

10061-02-75-25-2—1 97 1 ft A —L£. 1 i O «i7Q_^4._fi — —

108-88-3-108-90-7-1 nn 4.1 —4J. UU ** J. *t

— —— Chloromethane 10 tl— —— Bromomethane- ——— Vinvl Chloride- —— -Chloroe thane— — -Methvlene Chloride- —— -1 . 1-Dichloroethene__ — _i r 1-Dichloroet.hane-- — -1 . 2-Dichloroethene ( total )— —— Chloroform— — _1 m 2-Dichloroethane— — _1 : i 1-Trichloroethane- ——— Carbon Tetrachloride————— Bromodichloromethane— ---1 , 2-Dichloropropane5- — -cis-1 r 3-Dichloropropene-----Trichloroethene--- — Dibroraochlorome thane—— — 1 , 1 r 2-Trichloroethane— — -Benzene6- — -trans-1 . 3-Dichloropropene- — — Bromoform- — — Tetrachloroethene- — --1 .1,2 r 2-Tetrachloroethane--. — -Toluene- —— -Chlorobenzene- —— -Ethylbenzene

SURROGATE RECOVERY DATAD4-1 . 2-DichloroethaneD8-TolueneBromoflurobenzene

* — _ _____--

10 n10 n10 n5 U5 U5 05 U5 U5 D5 n5 U5 U5 05 U5 U5 U

- 5 U5 U5 U5 U5 U5 U5 U5 U5 U

% RECOVERY8810694

COMMENTU- Not DetectedJ= Detected But Below Method Detection LimitB= Compound in Blank

O R I O O I 0 2Signature

Name/Title Howard WhaleyGC/MS Project Manage

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON, PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID :Sample ID •'Analysis Date:

GAS NO.

613410CHROMATEX WSLLttlB4/19/88

COMPOUND

Client; INTEXMatrix: WATERLab File: CHROMV

COMKERESULTS(UG/L)

74-87-3—74-83-9 —75-01-4 —75-00-3 —75-09-2—75-35-4 —75-34-3—540-59-0-67-66-3—107-06-2-71-55-6 —56-23-5 —75-27-4—78-87-5—10061-01-79-01-6—124-48-1-79-00-5--71-43-2 —

— —— Chloromethane 10 U- ———— Bromomethane-- —— Vinyl Chloride . . .__- — Chloroe thane-----Methylene Chloride-----1 r 1-Dichloroethene .._ .._ .-----1 t 1-Dichloroethane „,.,.,..,,,., . ,.— —— 1 f 2-Dichloroethene ( total)__ —— Chloroform . ._,.. .-- —— 1 . 2-Dichloroethane . .,-- — -1 . 1 , 1-Trichloroethana . .— — -Carbon Tetrachloride . .-----Bromodichloromethana „-----1 . 2-Dichloropropane5----cis-l , 3-Dichloropropene-- — -Trichloroethene _._- —— -Dibromochloromethane.— —— 1 f 1 T 2-Trichloroethana .— — -Benzene .....

10061-02-6 ——— trans-1 . 3-DichloroDrooene75-25-2 —127-18-4-79-34-5 —108-88-3-108-90-7-100-41-4-

— ---Bromof orm-----Tetrachloroethene-- — -1 . 1 . 2 P 2-Tetrachloroethane-----Toluene_ _ _ _ -Chlorobenzene-- — -Ethylbenzene

SURROGATE RECOVERY DATAD4-1 . 2-DichloroethaneDS-TolueneBromof lurobenzena

10 Q10 U10 tl5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 ' U5 U5 U5 U5 U5 05 a5 U5 _._U5 U5 U

% RECOVEftY8210498

COMMENTU= Not DetectedJr Detected But Below Method Detection LimitB= Compound in Blank

&RI001Q3 Signature

Name/Title

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. I3OX 514 • SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID :Sample ID :Analysis Date '•

CAS NO.

615512CHROMATEX WELL IB4/22/88

COMPOUND

Client: INTEXMatrix: WATERLab File: 615512V

RESULTS(UG/L)

74-87-3--74-83-9--75-01-4--75-00-3--75-09-2--75-35-4--75-34-3--540-59-0-67-66-3--107-06-2-71-55-6—56-23-5--75-27-4--78-87-5--10061-01-79-01-6--124-48-1-79-00-5--71-43-2--10061-02-75-25-2 —127-18-4-79-34-5--108-88-3-108-90-7-100-41-4-

----------

-----Chl or ome thane-----Bromo methane- —— -Vinvl Chloride_____Chloroethane-----Methvlene Chloride— ---1 . 1-Dichloroethene-----1 - 1-Dichloroethane-----1 . 2-Dichloroethene ( total )-----Chloroform-----1 r 2-Dichloroethane-----1 . 1 f 1-Trichloroethane-----Car-bon Tetrachloride_____Bromodichloromethane_ _ _ _ _ ! _ 2-Dichloropropane5__-_cis_l r 3-Dichloropropene_____Trichloroethene_____Dibromochloromft.thane-----1 , 1 , 2-Trichloroethane.____-Benzenefi----trans-l , 3-Dichloropropene_ _ _ - -Bromo form_____Tetrachloroethene „ ,——— _1 r i r 2 T 2-Tetrachloroethane--- — Toluene___ — Chlorobenzene— ---Et.hvl benzene

SURROGATE RECOVERY DATAD4-1 , 2-DichloroethaneD8-TolueneBromo flurobenzene

10 n10 U10 010 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 LI5 U5 U5 U5 05 U5 U

% RECOVERY89q^i3 J

103

COMMENTU= Not DetectedJ= Detected But Below Method Detection LimitB= Compound in Blank

Signature

flR I 00 0*4 N Howard WhaleyGC/MS Project, Manager

/oY

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID : 615513Sample ID : CHROMATEX WELL IB FBAnalysis Date: 4/22/88

Client: INTEXMatrix: WATERLab File: 615513V

GAS NO. COMPOUNDRESULTS(UG/L)

' *7 A R*7 1, / 4—0 ( — o — —74-83-9 —75-01-4--75-00-3--75-09-2 —75-35-4—75-34-3 —540-59-0-C *7 C C 'Jb f -bb-o--i n*7 net o•71 C £ Cf 1 -3D-0--

56-23-5—7S ?7-4 -•7Q O rj C( tJ-B f -0--10061-01-7O_ni _c__i a — u i D — —124-48-1-7Q_nO-S--I *y W U b/

71-43-2 —10061-02-75-25-2--127-18-4-79-34-5—108-88-3-108-90-7-100-41-4-

—— --Chlorome thane——— -Bromomethake__ —— Vinvl Chloride- — — Chloroethane— - — Methylene Chloride— ---1 r 1-Dichloroethene- — --1 r 1-Dichloroethane———— 1 , 2-Dichloroethene (total)-----Chloroform__ — _i , 2-Dichloroethane-----1 . 1 . 1-Trichloroethane—— --Carbon Tetrachloride__ —— Bromodichloromethane— ---1 f 2-Dichloropropane5 — --cis-1 , 3-Dichloropropene- — --Trichloroethene- — --Dibromochlorome thane- ——— 1 . 1 . 2-Trichloroethane___ — Benzene6----trans-l r 3-Dichloropropene--- --Bromof orm--— -Tetrachloroethene-----1 ,1.2. 2-Tetrachloroethane-----Toluene- — --Chlorobenzene——— -Ethylbenzene

SURROGATE RECOVERY DATAD4-1 . 2-DichloroethaneD8-TolueneBromof lurobenzene

10 010 U10 U10 U5 05 U5 05 U5 __. U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 _.U5 U

-----------------+—---% RECOVERY

9888100

COMMENTU= Not DetectedJ- Detected But Below Method Detection LimitB= Compound in Blank

RR I 00 I 05Signature

Name/Title Howard WhaleyGC/MS Project Manager

to?

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID : 618742Sample ID : QICAnalysis Date: 5/11/88

Client: IntexMatrix: WaterLab File: 01CVR

CAS NO. COMPOUND COMMEflRESULTS(UG/L)

74-87-3-74-83-9-75-01-4-75-00-3-75-09-2-75-35-4-75-34-3--540-59-0-67-66-3--107-06-2-71-55-6-56-23-5--75-27-4--78-87-5--10061-01-79-01-6--124-48-1-79-00-5--71-43-2--10061-02-75-25-2—127-18-4-79-34-5--108-88-3-108-90-7-100-41-4-

--- — -Chloromethane 10 U— _ — -Bromome thane————— Vinvl Chloride---- — Chloroethane--- — -Methylene Chloride--- — -1 , 1-Dichloroethene ._ _ _ _ _ _ ! T i-Dichloroethane .— ----1 , 2-Dichloroet.hene (total)— ----Chloroform— - —— 1 , 2-Dichloroethane--- — - I r ^ t 1-Trichloroethane— ----Carbon Tetrachloride--- — -Bromodichloromethane— - — -l f 2-Dichloropropane-5- —— cis-1 T 3-Dlchloropropene— -- — Trichloroethene------Dibromochlororaethane.__ —— ! r i t 2-Trichloroethane-_____Benzene

_6----t,rans-l t 3-Dichloropropene----- -Bromo form. — — -Tetrachloroethene- ———— i t 1 r 2,2-Tetrachloroethane------Toluene— — --Chlorobenzene.__ — -Rthyl benzene

_ _ — — _ — — — -,— _ — ___ ___.___-4

SURROGATE RECOVERY DATAD4-1 t 2-Dichloroe thaneDS-TolueneBromo flurobenzene

10 D10 _ 010 05 U5 U5 U5 05 U5 05 U5 U _5 05 U5 U5 05 U5 U5 U5 U5 U5 U5 U5 U5 U5 U

% RECOVERY8810099

COMMENT0= Not DetectedJ= Detected But Below Method Detection LimitB= Compound in Blank

Signature

f l R I O O I O S Howard WhaleyGC/MS Project Manager

tOL

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID : 618743FBSample ID : W1CFBAnalysis Date: 5/03/88

Client: IntexMatrix: WaterLab File: 1CFB

GAS NO. COMPOUND COMMERESULTS(UG/L)

74-87-3--74-83-9--75-01-4--75-00-3--75-09-2--75-35-4--75-34-3--540-59-0-67-66-3 —107-06-2-71-55-6—56-23-5 —75-27-4 —78-87-5 —10061-01-79-01-6--124-48-1-79-00-5 —71-43-2 —10061-02-75-25-2--127-18-4-79-34-5 —108-88-3-108-90-7-100-41-4-

--- — Chlornmethane--- — Bromomethane———— Vinvl Chloride- — --Chloi-oef.hane— — -Methvlene Chloride_____! f 1-Dichloroethene-----1 r 1-Diehloroethane ,_____! r 2-Dichloroethene ( total )___ — Chloroform_____! f 2-Diehloroethane————— 1 r 1 , 1-Trichloroethane-----Carbon Tetrachloride— —— Bromodichlorome thane-----1 . 2-Dichloropropane5 — --cis-1 r 3-Dichloropropene_____Tri chloroethene-----Dibromochloromethane-----1 . 1 r 2-Trichloroethane-----Benzene6- —— trans-1 r 3-Dichlorooropene— ---Broroof orra-- —— Tetrachloroethene— —— 1 . 1 r 2 T 2-Tetrachloroethane___ — Toluene-- — -Chlorobenzene__ — -Ethvlbenzene

SURROGATE RECOVERY DATAD4-1 , 2-DichloroethaneDS-TolueneBromof lurobenzene

10 U10 U10 U10 U5 U5 U5 U5 U5 U5 U5 U5 U5 05 U5 U5 U5 U5 U5 U5 U5 U5 05 U5 U5 U5 U

% RECOVERY9594111

COMMENT0= Not DetectedJ- Detected But Below Method Detection LimitB= Compound in Blank

R R I O O I 0 7Signature

Name/Title Howard WhaleyGC/MS Project Manager

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID : 617355Sample ID : Well *2Analysis Date: 5/03/88

Client: IntexMatrix: WaterLab File: 617355V

CAS NO. COMPOUNDRESOLTS(UG/L)

74-87-3-74-83-9-75-01-4-75-00-3-75-09-2-75-35-4-75-34-3-540-59-067-66-3-107-06-271-55-6-56-23-5-75-27-4-78-87-5-10061-0179-01-6-124-48-179-00-5-71-43-2-10061-0275-25-2-127-18-479-34-5-108-88-3108-90-7100-41-4

____ — Chloromethane 10 0_ _ _ _ _ -Bromome thane————— Vinvl Chloride--- —— Chloroe thane---- — Methylene Chloride______! t l-Diehloroethene_ — _ — i r 1-Dichloroethane------1 , 2-Dichloroethene ( total )______Chloroform______! ? 2-Dichloroethane---- — 1 , 1 t 1-Trichloroethane______Carbon Tetrachloride--- — -Bromodichlorome thane------1 t 2-Dichloropropane-5----cis-l t3-Dichloropropfine______Trichloroethene------Dibromochlorome thane— __ — i ti r2-Trichloroethane------Benzene-fi----trans-l , 3-Diehl oropropene------Bromoforra__ —— -Tetrachloroethene—————— 1 , 1 ,2,2-Tetrachloroethane-- —— -Toluene______Chlorobenzene^_____Ethylhenzene-V ——— -.——— ______———___ ——— ——— ——— ——— ——— ——— . ——— ——— ______——— _________ ———

SURROGATE RECOVERY DATAD4-1 . 2-DichloroethaneDS-TolueneBromoflurobenzene

10 D10 H10 05 U5 Q5 U5 U5 U5 U6305 05 U5 05 U6005 U5 U5 U5 U5 U5 U5 U5 U5 U5 U

% RECOVERY9685103

COMMENTU= Not DetectedJ= Detected But Below Method Detection LimitB= Compound in Blank

f l R I O O I U SSignature

Name/Title Howard WhaleyGC/MS Project Manager

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID :Sample ID :Analysis Date:

GAS NO.

617355FBWell*2 FB5/05/88

COMPOUND

Client: IntexMatrix: WaterLab File: W2FB

COMMERESOLTS(UG/L)

74-87-3-74-83-9-75-01-4-75-00-3-75-09-2-75-35-4-75-34-3-540-59-067-66-3-107-06-271-55-6-CO 1 O CDo-23-5-75-27 478-87-5-10061-01

124-48-179-00-5-71-43-2-10061-02"7 C 1C Oi 5-<25-2-1 O7 1 Q A\£. I 1(5-479-34-5-108-88-3108-90-7100-41-4

------Chloromethane_ _ _ _ - -Bromome thane— —— -Vinyl Chloride_-____Chloroethan»______Me-thylene Chloride_ _ _ _ — i r 1-Dichloroethene------1 . 1-Dichloroethane_ _ _ _ _ _ ! _ 2-Dichloroethene ( total.)------Chloroform______! f 2-Dichloroethane—— — _1 f i f i-Trichloroethane------Carbon Tetrachloride— ----Bromodichloromethane_ _ _ _ _ _ ! m 2-Dichloropropane-5- — -cis-1 r 3-Dichloropronene------Trichloroethene------Dibromochloromethane------1 . 1 . 2-Trichloroethane-_____Ben2ene_6----trans-l r 3-Dichloropropene- - - - - -Bromof orm_____~Tetrachloroethene— ____! p i f 2 , 2-Tetrachloroethane--- — -Toluene------Chlorobenzene- — ---Ethvl benzene

SURROGATE RECOVERY DATAD4-1 , 2-DichloroethaneD8-TolueneBromof lurobenzene

10 U10 U10 U10 U5 U5 05 U5 U5 U5 0965 nu5 nw5 U5 U255 U*J U

5 U5 . U5 U5 n•-J \J

i s5 U5 U5 nU5 U

% RECOVERY9692

110

COMMENTU= Not DetectedJr Detected But Below Method Detection LimitB= Compound in Blank

Signature

RR 1 00 i OS Name/Titl< Howard WhaleyGC/MS Project Manager

m juQC inc

1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID :Sample ID :Analysis Date:

CAS NO.

617354Well *35/03/88

Client:Matrix:Lab File:

IntexWater617354V

COMPOUND COMME1RESULTS(UG/L)

74-87-3-74-83-9-75-01-4-75-00-3-75-09-2-75-35-4-75-34-3-540-59-067-66-3-107-06-271-55-6-56-23-5-75-27-4-78-87-5-10061-0179-01-6-124-48-179-00-5-71-43-2-10061-0275-25-2-127-18-479-34-5-108-88-3108-90-7100-41-4

-- — — Chloromethane 10 U_ — — -Rromo me thane—— _ — Vinyl Chloride-- — --Chloroe thane------Methylene Chloride------\ t 1-Diehloroethene__~___1 t i-Dichloroethane_ — ___i f 2-Dichloroethene (total )------Chloroform__-.__-! r 2-Dichloroethane-- — --1 T 1 T 1-Trichloroethane------Carbon Tetrachloride_ — — -Bromodichloromethane__ — __i ,2-Dichloropropane-5- — -cis-1 r 3-Dichloropropene_ — ---Trichloroethene------Dibromoehlorornethane------1 t 1 r 2-Trichloroethane___ — -Benzene_6- — -trans-1 , 3-Dichloropropene_ _ _ _ — Bromoform— ----Tetrachloroethene—— —— 1 , 1 T 2 r 2-Tetrachloroethane-- —— -Toluene— ----Chlorobenzene---- — Ethyl henzene

jSURROGATE RECOVERY DATA

D4-1 . 2-DichloroethaneD8-TolueneBromof lurobenzene

10 U10 U10 U5 U5 G5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U

% RECOVERY90105101

COMMENTU= Not DetectedJr Detected But Below Method Detection LimitB- Compound in Blank

Signature

f l R I Q O Nape/Title Howard WhaleyGC/MS Project Managerno

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 * (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID : 617354FBSample ID : Well*3 FBAnalysis Date: 5/05/88

Client: _ IntexMatrix: " WaterLab File: W3FB

CAS NO. COMPOUND COMMERESULTS(UG/L)

74-87-^-1 t O 1 \J*J A on f\74-83-9-75-01-4-

7s nq y75-3*i-4-* w ^* w 1

75-34-3-

C7 CC QO f -DO — O —

7 1-55—6-Sfi-?^-S-•Jv£f-J*J7S-P7-4-1 W *- I 1

78-87-5-10061-017Q_m -fi-1 J U J . O

124-48-1

71 A^ 9

10061-0275-25-2-

--- —— Chloromethane- - - - — Broroome thane————— Vinvl Chloride------Chloroe thane---- — Methvlene Chloride------1 . 1-Dichloroethene-- — — 1 . 1-Dichloroethane- — — -1 .2-Dichloroethene ( total )- ———— Chloroform-- — --1 . 2-Dichloroethane— -- — l.l . 1-Tri chloroe thane . ..- —— --Carbon Tetrachlorlde-- — --Bromodichloromethane ,---- — 1 . 2-Dichloropropane,-5-- — cis-1 P 3-Dichloropropene-- —— -Triehloroethene------Dibromochloromethane__ —— -1 .1 .2-Trichloroethane .,

T3

-6----trans-l . 3-Dichloropropene_ _ _ _ _ _ Bromoform

127-18-4 ————— Tetrachloroethene79-34-5-108-88-3108-90-7100-41-4

---- — 1 r 1 , 2 P 2-Tetrachloroe thane------Toluene— - —— Chlorobenzene--- — -Ethylbenzene

SURROGATE RECOVERY DATAD4-1 . 2-DichloroethaneD8-TolueneBromof lurobenzene

10 U10 U10 U10 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U .5 U5 U5 U5 05 U

% RECOVERY99102103

_ _ _ _ _ _ _ __ __ _ _ _ — __ _ __ _ ______.*.•___-_ __ _ _ _ _ _ _ _ — _ _ 4-

COMMENTU= Not DetectedJ= Detected But Below Method Detection LimitB= Compound in Blank

Signature

Name/Title Howard WhaleyGC/MS Project Managerin

QC tnc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID : 617356Sample ID : Well #4Analysis Date: 5/03/88

Client: IntexMatrix: WaferLab File: 617356V

GAS NO. COMPOUNDRESULTS(UG/L)

74-87-3-74-83-9-75-01-4-75-00-3-75-09-2-75-35-4-75-34-3-540-59-067-66-3-107-06-271-55-6-56-23-5-75-27-4-78-87-5-10061-0179-01-6-124-48-179-00-5-71-43-2-10061-0275-25-2-127-18-479-34-5-108-88-3108-90-7100-41-4

___ —— Chloromethane 10 0— ----Bromome thane————— Vinvl Chloride------Chloroethane__ — --Methylene Chloride— ____! f l-Dichloroethene— __ — i i i-Dichloroethane— ——— 1,2-Dichloroethene (total)______Chloroform--- — -1 , 2-Dichloroe thane—— — -1 , 1 , 1-Trichloroethane— - — -Carbon Tetrachloride— ----Bromodiehloromethane— — --1 f 2-Dichloropropane_5____ ci s_l t 3-Dichloropropene— ----Trichloroethene— — --Dibromoehloromethane— — __1 r i r 2-Trichloroe-thane— ----Benzene-fi----trans-l f 3-Dichloropropene_ _ _ _ _ _ Br omo f o rra------Tetrachloroethene——— __1 f 1 , 2 , 2-Tetrachloroethane— ----Toluene— ----Chlorobenzene— ----E-fchvlbenzene

SURROGATE RECOVERY DATAD4-1 . 2-DichloroethaneD8-TolueneBromof lurobenzene

10 010 U10 U5 U5 U5 U5 U5 05 05 U5 U5 U5 D5 D5 U5 - U5 U5 _05 05 U5 U5 U5 05 _ 05 U

% RECOVERY8498101

COMMENTU= Not DetectedJ= Detected But Below Method Detection LimitB= Compound in Blank

Signature

| 00 I 12 Name/Title Howard WhaleyGC/MS Project Manager

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

•'#

Lab ID : 617356FBSample ID : Well#4 FBAnalysis Date: 5/05/88

Client: IntexMatrix: WaterLab File: W4FB

GAS NO. COMPOUND COMMERESULTS(UG/L)

T <l Q *7 O74-87-3 —74-83-9--75-Q1-4--•7 K fifl O/ o-uu— o--/ D — UI7 £,

75-34-3 —540-59-0-C*7 KG *3 _b i -DO J— -107-06-2-•7 1 K. C 42* l-oo— o--

75-27-4--TO O f C.f O-O I — D — —10061-01-7Q fll C _

124-48-1-i& brf < A <—- ,b

79-00-5--71-43-2—10061-02-75-25-2--127-18-4-79-34-5--108-88-3-108-90-7-100-41-4-

— ---Chlorome thane-----Bromome thane_ _ _ _ _ Vinyl Chloride- - - - -Chloroethane-----Methylene Chloride-----1 . 1-Dichloroethene-----1 r 1-Dichloroethane-- — -1 r 2-Dichloroethene f total )____ -Chloroform__ — _1 r 2-Dichloroethane-----1 . 1 r 1-Trichloroethane-----Carbon Tetrachlorida-----Bromodichlorome thane-----1 . 2-Dichloropropane5----cis-l , 3-Dichloropropene-----Trichloroethene-----Dibromochloromethane-- — -1 . 1.2-Trichloroe thane_____Benzene6----trans-l r 3-Dichloropropene-----Bromofarm-----Tetrachloroethene-----1 . 1 r 2 . 2-Tetrachloroethane-----Toluene-----Chlorobenzene_____Ethvlbenzene

SURROGATE RECOVERY DATAD4-1 r 2-DichloroethaneD8-TolueneBromof lurobenzene

10 U10 U10 U10 U5 U5 U5 U5 05 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 05 U5 U5 U

% RECOVERY102100102

COMMENTU= Not DetectedJ- Detected But Below Method Detection LimitB= Compound in Blank

Signature

R R l O O ! 1 3 Narae/Title Howard WhaleyGC/MS Project Manager

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID : 617357Sample ID : Well 1*5Analysis Date: 5/03/88

Client: IntexMatrix: WaterLab File: 617357V

GAS NO. COMPOUNDRESULTS(UG/L)

*> t O1 O74-87-3--- — -

75-01-4 —————

75-09-2 —————75-35-4 —————75-34-3 —————540-59-0 ————67-66-3 —————107-06-2 ————71-55-6 —————56-23-5 —————75-27-4 —————78-87-5 —————10061-01-5 ——79-01-6 —————124-48-1 ————79-00-5 —————71-43-2 —————10061-02-6 ——75-25-2 —————127-18-4 ————79-34-5 —————108-88-3 ————108-90-7 ————100-41-4 ————

-Chlorome thane-Bromomethane-Vinvl Chloride-Chloroethane-Methylene Chloride-1 f 1-Dichloroethene-1 . 1-Dichloroethane-1 r 2-Dichloroethene (total )-Chloroform-1 r 2-Dichloroethane-1 r 1 r 1-Trichloroethane-Carbon Tetrachloride-Bromodichlorome thane-1 . 2-Dichloropropane-cis-1 t 3-Dichloropropene-Trichloroethene-Dibromochlorome thane-1 t 1 , 2-Trichloroe thane-Benzene-trana-1 , 3-Dichloropropene-Bromoform-Tetrachloroethene-1 r 1 r 2 r 2-Tetrachloroethane-Toluene- Chl orobenzene-Ethvlbenzene

SURROGATE RECOVERY DATAD4-1 .2-DichloroethaneDS-TolueneBromoflurohenzene

10 U10 D10 U10 U5 D5 U5 U5 05 Q5 U5 U5 U5 U5 U5 05 U5 U_5 U.5 U5 U5 U5 U5 _U_5 U5 U5 U

% RECOVERY8695106

COMMENT0= Not DetectedJ= Detected But Below Method Detection LimitB= Compound in Blank

Signature

Name/Title

A R I O OHoward WhaleyGC/MS Project Manager

//y

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX'514 • SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

X, <

Lab ID :Sample ID :Analysis Date:

GAS NO.

617357FBWell#5 FB5/05/88

COMPOUND

Client; IntexMatrix: WaterLab File: W5FB

COMMERESULTS(UG/L)

74-87-3-74-83-9-75-01-4-75-00-3-75-09-2-75-35-4-75-34-3-540-59-067-66-3-107-06-271-55-6-56-23-5-75-27-4-78-87-5-10061-0179-01-6-124-48-179-00-5-71-43-2-

- — ---Chloromftthane 10 U- — - - - Bromome thane————— Vinyl Chloride-- — --Chl or oe thane- — ---Methylene Chloride- — ---1 f 1-Dichloroethene------1 r 1-Dichloroe thane————— 1 ,2-Dichloroethene (total)-- — --Chloroform------1 . 2-Dichloroethane------1 f 1 T 1-Trichloroethane______Carbon Tetrachloride------Bromodiehlorome thane ,— ----1 t 2-Dichloropropane .-5----cis-l r 3-Dichloropropene------Trichloroethene------Dibromochloromethane—— _ — 1 r i r2-Trichloroethane_ _ _ _ _ -Benzene

1 0061-02-6-- — trans-1 . S-Dichloroorooene75-25-2-127-18-479-34-5-108-88-3108-90-7100-41-4

---- --Bromof orm- — - — Tetrachloroethene-. — — 1 T 1 r 2 , 2-Tetrachloroethane— — --Toluene______Chlorobenzene-- — — Ethyl benzene

SURROGATE RECOVERY DATAD4-1 . 2-DichloroethaneD8-TolueneBromof lurobenzene

10 U10 U10 U5 D5 05 05 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 05 U5 U5 U

% RECOVERY100102

COMMENTU= Not DetectedJ= Detected But Below Method Detection LimitB= Compound in Blank

R R I O O I 1 5 Signature

Name/Title Howard WhaleyGC/MS Project Manager

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID :Sample' ID ':Analysis Date:

GAS NO.

617358Well »10A5/04/88

Client: IntexMatrix: WaterLab File: 617358V

COMPOUND COMMEbRESOLTS(UG/L)

74-87-3-74-83-9-75-01-4-75-00-3-75-09-2-75-35-4-75-34-3-540-59-067-66-3-107-06-271-55-6-56-23-5-75-27-4-78-87-5-10061-0179-01-6-124-48-179-00-5-71-43-2-10061-0275-25-2-127-18-479-34-5-108-88-3108-90-7100-41-4

- — ---Chlorome thane— ----Bromome thane————— Vinvl Chloride------ Chl oroe thane-- — --Methylene Chloride------1 r 1-Dichloroethene-- — --1 - 1-Dichloroe thane-- —— -1 , 2-Dichloroethene (total )------Chloroform------1 r 2-Dichloroethane------1 P 1 r 1-Trichloroethane-- — --Carbon Tetrachloride------Bromodiehloromethane— ----1 . 2-Dichloropropane-5----cia-l r 3-Dichloropropene------Trichloroethene------Dihromochloromethane_ _ _ _ _ _ ! r i r 2-Trichloroethane------Benzene-6 — --trans-1 . 3-Dichloropropene- - - - - -Bromof orm------Tetrachloroethene------1 ,1,2, 2-Tetrachloroethane-- — --Toluene------Chlorobenzene- — ---Ethylbenzene

SURROGATE RECOVERY DATAD4-1 .2-DichloroethaneD8-TolueneBromof lurobenzene

! 10 U10 U10 U10 U5 U3621ISO5 U5 023005.85 U5 U5 U99005 U5 - U5 U5 a5 U5 . U5 D5 U5 U5 U

% RECOVERY9581105

COMMENTU= Not DetectedJ= Detected But Below Method Detection LimitB= Compound in Blank

Signature

ARI 00 ! 16 Name/Title Howard WhaleyGC/MS Project Manager

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 • {215} 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID :Sample ID :Analysis Date:

CAS NO.

617358FBWellSlOAFB5/05/88

COMFODND

Client: IntexMatrix: WaterLab File: W10AFB

COMMERESULTS(UG/L)

74-87-3--74-83-9--75-01-4--75-00-3--75-09-2--75-35-4--75-34-3--G.A(] *;Q_n_<j t \j *j & \je*7 c cz — _D ( DO — O- —

107-06-2-n c c o-55-6-^56-23-5--75-27-4--78-87-5—10061-01-79-01-6 —124-48-1-79-00-5--71-43-2--10061-02-•7 E O C O7o-2o-£--127-18-4-7 Q _ T A _ IN _ _I y 3 *i J

108-88-3-108-90-7-100-41-4-

*-----------

— ---Chloromethane 10 U-----Bromome thane———— Vinvl Chloride-----Chloroe thane-----Methvlene Chloride— ---1 t 1-Dichloroethene-----1 . 1-Dichloroethane-----1 . 2-Dichloroethene f total )-----Chloroform ,_,_,. ..-----1 , 2-Diehloroe-thane———— 1 . 1 r 1-Trichloroethane-----Carbon Tetrachloride-----Bromodichloromethane-----1 r 2-Diehloropropane5----cis-l . 3-Dichloroprocene-----Triehloroethene-----Dibromochloromethane-----1 . 1 . 2-Trichloroethane-----Benzene6----trans-l . 3-Dichloropropene-----Bromoform

-----1 .1,2. 2-Tetrachloroethane-----Toluene- — --Chlorobenzene-----Ethylbenzene

SURROGATE RECOVERY DATAD4-1 r 2-DichloroethaneDS-TolueneBroroof lurobenzene

10 U10 U10 U5 U5 U5 U5 U685 U5 U5 U

105 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 CJ

% RECOVERY102104100

COMMENTCJ- Not DetectedJ= Detected But Below Method Detection LimitB- Compound in Blank

A R I O O ! 1 7

Signature

Name/Title Howard WhaleyGC/MS Project Manager

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 * SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

* %*/TJt _.* -V

Lab ID :Sample ID :Analysis Date:

GAS NO.

615509CHROMATEX4/22/88

WELL 10BClient: INTEXMatrix: WATERLab File: 615509V

COMPOUNDPESULTS(UG/L)

1 — --------74-87-3-74-83-9-75-01-4-75-00-3-75-09-2-75-35-4-75-34-3-540-59-067-66-3-107-06-271-55-6-56-23-5-75-27-4-78-87-5-10061-0179-01-6-124-48-179-00-5-71-43-2-10061-0275-25-2-197 18-479-34-5-108-88-3108-90-7100-41-4

- --------

------Hhlorome thane- - - - - -Bromome thane————— Vinvl Chloride------Chloroethane------Methvlene Chloride___*__1 r l-Dichloroethene___-__} t i-Dichloroethane------I ,2-Dichloroethene (total)------Chloroform^_-___l T 2-Dichloroethane——— ---1 , 1 , 1-Trichloroethane-.__-__Carbon Tetrachloride------Bromodichloromethane------1 . 2-Dichloropropane-5----cis-l .3-Dichloropropene------Trichloroethene-------Dibromochlorome thane------1 . 1 r 2-Trichloroethane------Benzene-6----trans-l . 3-Dichloropropene_ _ _ _ _ -Bromof orm______Tetrachloroethftne———— — 1 f 1 , 2 t2-Tetrachloroethane—— ---Toluene___ — -Chlorobenzene—— ---Etnylbenzene

SURROGATE RECOVERY DATAD4-1 . 2-DichloroethaneD8-TolueneBromof lurobenzene

10 010 010 U10 U5 U5 U5 U5 U5 U5 U5 .05 U5 _ . _ U5 U5 U5 U5 U5 U5 . __U5 U5 U5 05 U5 _.U5 05 U

— — -, — — — -^ — -. — — -» 4-

% RECOVERY9110198

COMMENTU= Not DetectedJ= Detected But Below Method Detection LimitB= Compound in Blank

Signature

A R I O O i 1 8 Narae/Title Howard WhaleyGC/MS Project Manager

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID : 615510Sample ID : CHROMATEX WELL 10B FBAnalysis. Date: 4/22/88

Client: INTEXMatrix: WATERLab File: 615510V

CAS NO. COMPOUNDRESULTS(UG/L)

74-87-3-7 A fl *3 Q

75-01-4-75-00-3-7S-09-2I \J w £7 £•

75-35-4-75-34-3-540-59-067-66-3-107-06-2nc. c c-oo-b-C f* ** *} C56-23-5-7S-27-41 \J L- 1 1

78-87-5-10061-0179-01-6-124-4Q-179-00-5-71-43-2-10061-0275-25-2-127-18-479-34-5-108-88-3108-90-7100-41-4

------Chloromethane ! 10 II------Bromomethane— _ — -Vinvl Chloride ,_,____Chloroethane------Methylene Chloride— ____! 1-Dichloroethene------1 r 1-Dichloroethane------1 . 2-Dichloroethene ("total )_ _ _ _ _ -Chloroform------1 r 2-Dichloroethane ,------1 r 1 , 1-Triehloroethane------Carbon Tetrachloride------Bromodichloromethane______! r 2-Dichloropropane-5----cis-l r 3-Dichloropropene------Trichloroethene------Dibromochlorome thane------1 . 1 . 2-Trichloroethane------Benzene_6-___trans-l . 3-Dichloropropene-- ----Bromof orm------Tetrachloroethene— ----1 r 1 P2 ,2-Tetrachloroethane--- — -Toluene------Chlorobenzene____-_E-thvlbenzene

SURROGATE RECOVERY DATAD4-1 .2-DichloroethaneD8-TolueneBromof lurobenzene

10 U10 010 U5 D5 05 D5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 D5 U5 U5 U5 U5 U

_ _ _ _ _ _ _ _ _ _ — _ _ _ _ _ + - _ _ _% RECOVERY

89105 _99

COMMENTU= Not DetectedJ- Detected But Below Method Detection LimitB- Compound in Blank

R R I Q O ! 1 9

Signature

Name/Title Howard Whale/GC/MS Project Manager

C

IW 17

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON, PA 18966-0514 * (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID :Sample ID :Analysis Date:

GAS MO.

61874410C *5/11/88

Client: IntexMatrix: WaterLab File: 10CVR

COMPOUND COMME1RESULTS(UG/L)

T-— -——--——

74-87-3-74-83-9-75-01-4-75-00-3-75-09-2-75-35-4-75-34-3-540-59-067-66-3-107-06-271-55-6-56-23-5-75-27-4-78-87-5-10061-0179-01-6-124-48-179-00-5-71-43-2-10061-0275-25-2-127-18-479-34-5-108-88-3108-90-7100-41-4

--- —— Chlorome thane. — ---Bromome thane— ——— Vinyl Chloride— ----Chloroethane------Methylene Chloride- — ---1 T 1-Dichloroethene___ — _i r l-Dichloroethane_ — ---1 , 2-Dichloroe-thene (total )------Chloroform- —— --1 t 2-Dichloroethane------1 , 1 , 1-Trichloroethane- — ---Carbon Tetrachloride____ — Bromodichlorome thane__ — -_i r 2-Dichloropropane_5-___cia-l .3-Dichloropropene____,_Trichloroethene-------Dibromochlororoe thane—— — _1 f i ? 2~Trichloroethane______Benzene

_6----trans-l T 3-Dichloropropene------Bromoform-- —— --Tetrachloroethene————— 1 ,1,2, 2-Tetrachloroethane- — ---Toluene______Chlorobenzene_ _ _ _ . - E thy 1 "ben zene

SURROGATE RECOVERY DATAD4-1 . 2-Dichloroe thaneD8-TolueneBromof lurobenzene

10 010 U10 D10 U5 U5 U5 U5 _ U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U.5 U5 U5 U5 ... U5 U5 U5 U

% RECOVERY929999

COMMENTU= Not DetectedJ= Detected But Below Method Detection LimitB= Compound in Blank

A R 1 0 0 1 2 0 ,Signature

Name/Title Howard WhaleyGC/MS Project Manager

/ ciO

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID :Sample ID :Analysis Date:

GAS NO.

618744Field Blank5/11/88

COMPOUND

Client: IntexMatrix: WaterLab File: 10CFBVR

RESOLTS(OG/L)

""T A Q *7 O74-87-3-7 A ft Q Q/ 4 o j-y —7S-01 4-1 %J U A ^t

7*\ nn *H-I ij U U *J

75-09-2-1 w* \J J £•

7*S-^S~4-J 4J *J feS ^

7^-^4-T-i «j <j i «jSUO-^q O<J *± U iJ «? U(57 CC QD / — OO-O —In 7 r\c oU / -Uo-^;71 C C fc!l-oo-o-c.c_o(a_«i_7S ?7 4-' tJ £• I T70 O*7 C/ o-B r -o-10061-0179-01-6-124-48-179-00-5-i *j w W iJ71 j *"i •"»1-43-2-10061-027el-PS-P1 tj £i%s £.

127-18-4T ^ O A C79-34-5-108-88-3108-90-7100-41-4

___ — _-__

--- — -Chlorome thane------ Bromorae thane— ——— Vinyl Chloride---- — Chloroe thane------Methylene Chloride_____-l , l-Dichloroethene— — __1 1-Dichloroethane------1 . 2-Dichloroethene ( total )— ----Chloroform— — --1 f 2-Dichloroethane—— ---1 t 1 r 1-Trichloroethane- — ---Carbon Tetrachloride .— ----Bromodichlorome thane------1 . 2-Dichloropropane-5----cis-l ,3-Dichloropropene------Trichloroethene------Dibroraochloromethane------1 . 1 . 2-Trichloroethane------Benzene-6----trans-l r 3-Dichloropropene— ----Bromoforra

i t= Lii eac-iii cj j/oe i*rieiie__ii _ ._------1 r 1 r2 r2-Tetrachloroethane------Toluene------Chlorobenzene------ Ethvl benzene

SURROGATE RECOVERY DATAD4-1 .2-DichloroethaneD8-TolueneBromoflurobenzene

10 U10 n10 n10 U5 05 - a5 U5 : U5 a5 U5 U5 U5 05 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U5 U

% RECOVERY88 _104102

COMMENTU- Not DetectedJ- Detected But Below Method Detection LimitB= Compound in Blank

A R I O O I 2 ISignature

Name/Title Howard WhaleyGC/MS Project Manager

QC inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 - (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID : 618744Sample ID : Field BlankAnalysis Date: 5/11/88

Client: IntexMatrix: WaterLab File: 10CFBVR

GAS NO. COMPOUNDRESULTS(UG/L)

74-87-3—74-83-9—75-01-4—75-00-3 —75-09-2—75-35-4—75-34-3—540-59-0-67-66-3—107-06-2-71-55-6—56-23-5—75-27-4—78-87-5—10061-01-79-01-6 —124-48-1-79-00-5 —71-43-2 —

-----Chloromethane , 10 0- - - - -Bromome thane—— — Vinyl Chloride-----Chloroethane_ — --Methylene Chloride_ — __i f i-Dlchloroethene-----1 T 1-Di chloroethane——— -1 , 2-Dichloroethene (total)_- —— Chloroform-----1 , ?-Dichloroethane-----1 r 1 f 1-Trichloroethane_ — --Carbon Tetrachloride—— --Bromodichlorome thane_ _ _ _ _ ! r 2-Dichloropropane5 — -~cis-l , 3-Dichloropropene-----Trichloroethena__-__nibromochlororoethane———— 1 r 1 r 2-Trichloroethane-----Benzene

10061-02-6 — — -trans-1 . S-Dichloroorooene75-25-2 —127-18-4-79-34-5 —108-88-3-108-90-7-100-41-4-

-- — -Bromoform— — -Tetrachloroethene— ---1 , 1 , 2 , 2-Tetrachloroethane— — -Toluene-----Chlorobenzene_ _ _ _ _ E t h y l benzene

SURROGATE RECOVERY DATAD4-1 , 2-DichloroethaneD8-TolueneBroraof lurobenzene

10 D10 0

._ 10 U5 U5 05 U5 U5 U_5 . U_5 U5 U5 U5 U5 U5 U5 U5 ... U.5 U5 U5 U5 U5 U5 U5 U5 _ U

% RECOVERY88

104102

, + _ _COMMENTU= Not DetectedJ= Detected But Below Method Detection LimitB- Compound in Blank

ARSignature

00 1 22Narae/Title Howard WhaleyGC/MS Project Managei

QC Inc1205 INDUSTRIAL HIGHWAY * P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

«fc/ft

Lab ID : 617359Sample ID : Well »1:Analysis Date: 5/04/88

Client: Intextfatrix: WaterLab File: 617359V

CAS NO. COMPOUND COMMERESULTS(UG/L)

74-87-3-74-83-9-75-01-4-75-00-3-75-09-2-75-35-4-75-34-3-540-59-067-66-3-107-06-271-55-6-56-23-5-75-27-4-78-87-5-10061-0179-01-6-124-48-179-00-5-71-43-2-10061-0275-25-2-127-18-479-34-5-108-88-3108-90-7100-41-4

------Chloromethane 10 U- —— --Bromome thane————— Vinvl Chloride------Chloroethane— ----Methylene Chloride______ ! m l-Dichloroethene--- — -1 . 1-Dichloroethane------1 r 2-Diehloroethene ( total )------Chloroform______! r 2-Dichloroe thane--- — -1 r 1 r 1-Trichloroethane__ — --Carbon Tetrachloride- - - - - -Bromodichlorome thane-_-___! .2-Dichloropropane .-5----eis-l . 3-Dichloropropene------Trichloroethene------Dibromochlorome thane- — —— 1 , 1 , 2-Trichloroethane------Benzene-6----trans-l r 3-Dichloropropene------Bromoform______Tetrachloroethene————— 1 r 1 r 2 r 2-Tetrachloroethane_ —— — Toluene__ — --Chlorobenzene______Ethylbenzene___«. _ _ _ _,__ _ _ _ _ _ — __ — — _^ — __•._ — _-tSURROGATE RECOVERY DATA

D4-1 . 2-DichloroethaneD8-TolueneBromoflurobenzene

10 010 U10 U.5 D28037010305 U5 U130005 U5 U5 05 U17000. 5 U5 U5 U5 U5 U355 U1405 U29

% RECOVERY998498

COMMENTU= Not DetectedJz Detected But Below Method Detection LimitB= Compound in Blank

R R I Q O I 2 3Signature .

Name/Title Howard WhaleyGC/MS Project Manager

133

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18965-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID :Sample ID :Analysis Date:

GAS NO.

617359FBField Blank5/04/88

Client; IntexMatrix: WaterLab File: IntexFB

COMPOUNDRESULTS(UG/L)

74-87-3-74-83-9-75-01-4-75-00-3-75-09-2-75-35-4-75-34-3-540-59-067-66-3-107-06-271-55-6-56-23-5-75-27-4-78-87-5-10061-0179-01-6-124-48-179-00-5-71-43-2-

————— Chloromethane 10 ! 0--- — -Bromo me thane————— Vinvl Chloride------Chloroethane------Methylene Chloride__ — __i r i-Dichloroethene--- — -1 r 1-Dichloroethane___-__! t 2-Dichloroethene ( total )------Chloroform___ — _i r 2-Dichloroethane--- — -1 j 1 r 1-Trichloroethane------Carbon Tetrachloride__ —— -Bromodi chloromethane___ — _1 ( 2-Dichloropropane-5----cis-l , 3-Dichloropropene------Trichloroethene----- -Di broraoch lor ome thane- —— __1 r i . 2-Trichloroethane------Benzene

10061-02-6-- — trans-1 . S-Dichlorocrooene75-25-2-127-18-479-34-5-108-88-3108-90-7100-41-4

_ _ _ _ _ _ _ _ _

------ -Bromo form-- —— -Tetrachloroethene———— -1 , 1 r2 ,2-Tetrachloroethane______Toiuene______Chloroben7,ene__ — --Ethvlbenzene

_ — — _ — _ — — _—— — — — _ _ _ _ -(SURROGATE RECOVERY DATA

D4-1 .2-DichloroethaneDa-TolueneBromof lurobenzene

10 U10 010 U5 U5 U5 U5 U5 U5 U5 U5 U5 05 U5 U5 U5 U5 U5 U_5 U5 U ._5 U5 U5 . U5 . U.5 U

% RECOVERY919099

COMMENTOr Not DetectedJ= Detected But Below Method Detection LimitB= Compound in Blank

ARSignature

j 0 L Name/Title Howard WhaleyGC/MS Project Manager

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID : 617359FBSample ID : Field BlankAnalysis Date: 5/04/88

Client: IntexMatrix: WaterLab File: IntexFB

CAS NO. COMPOUNDRESULTS(OG/L)

7A-fi7_'*_-/** o / o74 — fl'l—Q — —( H — OO 37*s_m 4__j »j u j. *t75-00-3—75-09-2--75-35-4--7S_Q4 •*_-1 J O^l 3<^40- SQ~n-«J *1 U *J 3 U

67-66-3—1 n7_nc_o_*7 1 C C Ofl -OD-D--PC_9^ *__3O £O O7^_P7_A-_rj t(*t*7 Q Q *7 CI O-O f -O--

10061-01-7 o_ni c124-48-1-79-00-5--71-43-2--10061-02-75-25-2--1 97-1 R- AA ^ / X O * i79_q4_S _In o o o oUo-Ho- J-108-90-7-100-41-4-

-- — -Chlorome thane— ---Bromomethane———— Vinvl Chloride— — -Chloroethane_____Methylene Chloride-----1 r 1-Dichloroethene-----1 . 1-Dichloroethane-- — -1 t 2-Dichloroethene (total )__ — -Chloroform-- — -1 r 2-Dichloroathane ._———— 1 r 1 r 1-Trichloroethant-----Carbon Tetrachloride nii m— — -Bromodichloromethane--- — 1 r 2-Dichloropropane5__ — cia-1 . 3-Dichloropropene , ,-----Trichloroethene- - - - -Di bromochlorome thane- — --1 r 1 . 2-Trichloroethane-----Benzene ,. ,6----trans-l .3-Dichloropropene-----Bromoform-----Tetrachloroethene-- — -1 r 1 t 2 r 2-Tetrachloroethane

— ioj.uene_ _ __ .,- — --Chlorobenzena-----Ethylbenzene

SURROGATE RECOVERY DATAD4-1 .2-DichloroethaneD8-TolueneBromoflurobenzene

10 II10 H10 1110 U5 05 05 U5 U5 [J5 U5 U5 U5 U5 U5 U5 U5 05 D5 U5 U5 05 U5 U5 U5 U5 U

% RECOVERY919099

COMMENTU= Not DetectedJ= Detected But Below Method Detection LimitB= Compound in Blank

9S(_ J

Signature x

Name/Title Howard WhaleyGC/MS Project Manager

QC Inc1205 INDUSTRIAL HIGHWAY • P.O. BOX 514 • SOUTHAMPTON. PA 18966-0514 • (215) 355-3900

VOLATILE ORGANICS ANALYSIS DATA SHEETMethod 624

Lab ID : 618743Sample ID : 10DAnalysis Date: 5/11/88

Client: IntexMatrix: WaterLab File: 10DVR

GAS NO. COMPOUNDRESULTS(UG/L)

COMMI

74-87-3-74-83-9-75-01-4-75-00-3-75-09-2-75-35-4-75-34-3-540-59-067-66-3-107-06-271-55-6-56-23-5-75-27-4-78-87-5-10061-0179-01-6-124-48-179-00-5-71-43-2-

-- —— -Chloromethane 10 U- — —— Bromo methane————— Vinvl Chloride------Chloroe thane------Methylene Chloride- — ---1 , 1-Dichloroethene_ _ _ _ _ _ ! r l-Dichloroethane______! ( 2-Dichloroethene (total )--- —— Chloroform-- — — 1 , 2-Diehloroethane- — ---1 , 1 , 1-Trichloroethane---- — Carbon Tetrachlorid*_ —— --Bromodif7hloromethane------1 , 2-Dichloropropane-5- — -cia-1 , 3-Dichloropropene--- — -Trichloroethene------Dihromoehloromethane------ltlr 2-Trichloroethane-- — --Benzene

1 O061-02-6 —— -trans-1 . S-Dichloroorocene75-25-2-127-18-479-34-5-108-88-3108-90-7100-41-4

-- — - -Bromof orm------Tetrachloroethene_ —— __1 ,1,2, 2-Tetraohloroethane-_ — --Toluene---- — Chlorobenzene, —— --Ethyl benzene

SURROGATE RECOVERY DATAD4-1 t 2-DichloroethaneD8-TolueneBromof lurobenzene

101010559.884552055555705555555555

U__ 0U

__ U._ u_

__ U0

__ U.__ U__ U.

0.

U.

UUUU

__ 0.aUU

% RECOVERY82110105

COMMENTU= Not DetectedJ- Detected But Below Method Detection LimitB= Compound in Blank

A R I 0 0 1 2 6Signature ,

Name/Title Howard WhaleyGC/MS Project Manage

lie.